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PC Support: Most Popular Articles

These articles are the most popular over the last month.
Here's What to Do When Your Computer Doesn't...
Here's what to do when your computer won't turn on. Fix a desktop, laptop, or tablet that won't boot all the way, or even one that won't start at all.
Getting a 500 Internal Server Error? Here's...
The 500 Internal Server Error (aka HTTP 500 error) is a generic error suggesting a problem with the website's server. Here's what you can do about it.
21 Command Prompt Tricks & Hacks
Nearly two dozen Command Prompt tricks and other Command Prompt hacks to help you get the most out of the Command Prompt in Windows 7, 8, Vista, or XP.
19 Free Data Recovery Software Tools
Free data recovery software, aka free file recovery or undelete software, can help recover deleted files. Here are reviews of the best ones out there.
Need an ISO Image on a USB Drive? Here's How to...
Getting an ISO file onto a USB drive isn't as easy as copying the file. Here's a complete tutorial on how to burn an ISO to USB, like a flash drive.
How To Recover From a Frozen Windows Update...
Help on what to do when your computer gets stuck or freezes (locked-up) during the installation or configuration of a Windows update.
Free and Public DNS Servers
A list of public and completely free DNS servers, plus instructions on how to change them. This DNS server list was last updated in July 2015.
7 Free Windows Password Recovery Tools
Windows password recovery tools are used to recover Windows log on passwords. Here are the 7 best free Windows password recovery and cracking tools.
Here's What to Do When Your Computer Starts but...
Does your computer turn on but show just a black screen? If some things seem to be working properly, but there's no display, give this a try...
How to Delete Everything on a Hard Drive
Easy instructions on how to wipe a hard drive. A hard drive wipe will erase everything on the hard drive - something deleting and formatting can not do.
Getting a 502 Bad Gateway Error? Here's What to...
The 502 Bad Gateway error means that two different servers involved in loading a web page (or other task) are not able to communicate. Here's what to do...
No DVD Drive? Install Windows 8 From a Flash...
Here's how to install Windows 8 or 8.1 from a USB device like a flash drive. You'll need to properly format the USB drive and then copy the Windows 8 files.
Access the Advanced Startup Options in Windows...
Here are several ways to access Advanced Startup Options, the recovery and repair menu in Windows 8 & 8.1 including System Restore, Safe Mode, and more.
No DVD Drive? Install Windows 7 From a Flash...
Before you can install Windows 7 from a USB flash drive, you must properly format the drive and then copy the setup files to it. Here's how.
What You Should Do if You Forget Your Windows 7...
Try not to panic if you forgot your Windows 7 password. Luckily, there are a number of things you can do to overcome a forgotten password.
Need to Start Windows 7 in Safe Mode? Here's How
A complete tutorial on how to start Windows 7 in Safe Mode. Starting Windows 7 in Safe Mode can help diagnose and solve many serious problems.
Did You Forget Your Windows 7 Password? Here's...
You can reset your Windows 7 password if you've forgotten it. Learn how to reset the password to your Windows 7 account, for free, without extra software.
10 Free Programs That Will Help Update Drivers...
Free driver updater programs help you find and update the drivers on your computer. Here are the 10 best driver update tools, as of July 2015.
Getting a 403 Forbidden Error? Here's What to Do
The 403 Forbidden error means that whatever resource or webpage you were trying to access is forbidden from being accessed. Here are some things to try.
How to Boot From a USB Flash Drive
Instructions on how to make your computer boot from a USB device, like a flash drive or a USB connected hard drive.
How To Create an ISO Image File From a CD or DVD
One easy way of backing up a disc is creating an ISO image of it. See these easy instructions for creating an ISO image file from a CD, DVD, or BD disc.
The World's Most Complete List of Windows...
A complete list of the over 280 Command Prompt commands across Windows 8, 7, Vista, and XP, including full descriptions of each CMD command.
Forget Your Windows 8 Password? Here's How to...
A complete tutorial on how to reset a Windows 8 password, for free, without using password recovery software or other third-party software.
Getting a 404 Not Found Error? Here's What to Do
The 404 Not Found error, often called Error 404 or an HTTP 404 error, means that the webpage you were trying to load was not found. Here's what to do.
Forgot Your Windows Password? This Free Program...
Ophcrack is simply the best free Windows password recovery software program available. See my full review of Ophcrack LiveCD v3.6.0.
3 Easy Steps to Access BIOS
Enter BIOS with these steps. Access BIOS to make hardware configuration changes, set boot order, reset BIOS passwords, change BIOS settings, and more.
How Do I Update to the Latest Version of...
It's really simple to update Internet Explorer, which involves either downloading and installing the latest version, or using Windows Update. Here's how.
16 Free Programs for Remotely Accessing Your PC
A list of the best free remote access programs, sometimes called free remote desktop or remote control software. Last updated July, 2015.
How To Open Command Prompt in Windows 8 and 8.1
A guide on accessing Command Prompt in Windows 8 & 8.1. You'll need to open a Command Prompt window to execute most commands in Windows 8.
How to Download and Install DirectX
Where and how to download and update DirectX. Updating DirectX 12, 11, 10, or 9 is easy and could improve game performance in Windows.
22 Free Product Key Finder Programs
22 totally free key finder software programs, ranked and reviewed. Keyfinders find lost software product keys or serial numbers. Updated July 2015.
Lost Your Windows 8 Product Key? Here's How to...
Lost your Windows 8 product key? You may be able, under certain conditions, to extract your Windows 8 or Windows 8.1 product key from the registry.
How to Access Disk Management in Windows 7
Disk Management in Windows 7 can be accessed from the Computer Management utility. Follow these steps to open Disk Management in Windows 7.
How to Reinstall Windows 7 From Scratch
A Windows 7 clean install tutorial with screenshots and full instructions. A clean install of Windows 7 is often the best way to reinstall Windows 7.
Forget Your Windows 8 Password? Here Are Your...
No, you are not locked out of your computer forever if you forgot your Windows 8 password. Here are several things you can do to get back in.
Think You Might Have a Hard Drive Problem? Test...
A list of free hard drive testing software programs. These hard drive test programs will do just that - test your hard drive for problems.
What's a DAT File and How Do You Open One?
A DAT file might be a video, email, or generic data file. Learn how to open a .DAT file or convert a DAT file to another file format.
Recuva File Recovery: A Full Review
Recuva is the very best free file recovery program available. I highly recommend you try Recuva before any other undelete program.
Easily Format a Hard Drive in Windows 7
Detailed tutorial on how to format a hard drive in Windows 7. You must format a hard drive to use it in Windows 7.
Have a BOOTMGR Error? Here's How to Fix It
How to fix the BOOTMGR is Missing and Couldn't Find BOOTMGR errors that sometimes appear during startup on a Windows 8, 7, or Vista computer.
Use the SFC /Scannow Command to Repair Windows...
The sfc scannow option is the most useful way to run System File Checker. Using sfc with the scannow option will scan and repair important Windows files.
A Complete Tutorial on Changing the Boot Order...
Detailed tutorial on how to change the boot order in BIOS. A change to the boot sequence will change the order in which devices are booted from.
Getting a 503 Service Unavailable Error? Here's...
The 503 Service Unavailable error means that the web site's server is not available, usually due to maintenance or server overloading.
Can't Open a File? Here's How to Convert It
Looking for a free file format converter? Here's a list of 100% free file converter programs for video files, audio files, image files, and more.
How To Open the Windows Registry Editor
Easy instructions on how to open Registry Editor, the program included in Windows 8, 7, Vista, and XP that's used to make changes to the registry.
How to Set Up Automatic Login on Windows 8
An easy tutorial on making Windows 8 or 8.1 login automatically. Configuring Windows 8 to auto logon is easy but should only be done in secure environments.
Here's Where to Download Windows 8 or 8.1
Want to download Windows 8 or 8.1 instead of buying it on disc? Need to download Windows 8.1 or 8 to replace a DVD or ISO? What about for free? I have answers!
Are You Seeing a Code 43 Error? Here's What You...
How to fix the Code 43 error in Device Manager. Code 43 errors appear when a device reports general problems to Windows.
37 Completely Free Registry Cleaner Programs
A list of the best freeware registry cleaners available today. Free registry cleaners remove duplicate or unwanted entries from the Windows Registry.
Getting a 504 Gateway Timeout Error? Here's...
A 504 Gateway Timeout error, also called an HTTP 504 error, means that one server didn't receive a response from another quickly enough so it timed out.
Did You Know There Were This Many Commands in...
A complete list of Command Prompt commands in Windows 7. There are over 230 commands, referred to as CMD commands or DOS commands, in Windows 7.
Here's What to Do When Your Computer Has No Power
There are lots of reasons why a computer might not be getting any power. If you turn on your computer and it doesn't power on at all, give this a try...
What's an EPUB File and How Do You Open One?
An EPUB file is an Open Publication Structure eBook file. Learn how to open an .EPUB file or convert an EPUB file to another file format.
A Full Review of Driver Booster, a Free Driver...
Driver Booster is a free driver updater program that's easy to use, automatically checks for outdated drivers, and lots more. Here's my full review.
How to Find the Administrator Password in...
A list of ways to find the Windows 7 administrator password. An admin password in Windows 7 is the one needed to access some advanced areas in Windows.
How to Download Windows 7 the Legal Way
Most download Windows 7 to reinstall it, after losing a Windows 7 DVD or never receiving one. But from where? Is it legal? Tim Fisher has answers!
ISO Files: Everything You Need to Know
An ISO file is a single file containing all the data from a CD, DVD, or BD. The ISO file (or ISO image) is a perfect representation of the whole disc.
3 Easy Ways to Clear CMOS (Reset BIOS)
Three ways to clear the CMOS memory on your motherboard. Clearing CMOS will reset your BIOS settings to their factory default levels.
5 Free Ways to Easily Format Your 'C' Drive
Here are 5 ways to format C drive. To format C means to format the drive that the operating system is on, which is usually the C drive.
Here's What to Do When Your Computer Shuts Off...
A hardware issue or short is a likely cause of these types of issues. If you turn on your computer and it promptly turns itself off, give this a try...
How Fast is Your Internet Connection?
A list of free Internet speed test sites, updated July 2015. An Internet speed test, or broadband speed test, tests your available bandwidth.
What is My Default Gateway IP Address?
The default gateway IP address is usually the IP address for your router. Learn how to find the default gateway in Windows 8, 7, Vista, or XP.
How to Set Up Automatic Login on Windows 7
Easy instructions on how to make Windows 7 login automatically! Configuring Windows 7 to auto login can substantially speed your PC's total boot time.
An Easy Guide to Clean Installing Windows 8 or...
A Windows 8 & 8.1 clean install tutorial with detailed instructions and screenshots. A clean install is the best way to install Windows 8 or Windows 8 Pro.
What is the Command Prompt in Windows?
Command Prompt is a command line interpreter program available in Windows. Command Prompt is similar in appearance to MS-DOS.
How to Fix a Blue Screen of Death
Easy to follow tutorial to help fix a Blue Screen of Death. A BSOD might be caused by hardware or software so proper troubleshooting is important.
Need to Start Windows 8 or 8.1 in Safe Mode?...
A tutorial on starting Windows 8 or 8.1 in Safe Mode. If you can start Windows 8 in Safe Mode you may be able to fix whatever startup problem you're having.
What's a TGZ File and How Do You Open One?
A TGZ file is a GZIP Compressed Tar Archive file. Learn how to open a .TGZ file or convert a TGZ file to another file format.
Belarc Advisor: A Complete Review
Belarc Advisor v8.4 is one of the better free system information utilities. Here's my complete review of the latest version of Belarc Advisor for Windows.
21 Things You Didn't Know About... Microsoft...
Did you know Microsoft started in 1976? and that Bill Gates has a driving problem? Here are 21 things you didn't know about Microsoft and Mr. Gates.
What You Need to Know About Windows 7
Basic information about Microsoft Windows 7 including editions, service packs, release date, minimum and maximum hardware, and more.
How to Easily Reset a Password in Windows 7
A step-by-step, screenshot based walkthrough of one of the most successful Windows 7 password reset procedures. No third-party software required!
Can Disk Management Help Format a Flash Drive...
Disk Management in Windows 8 can be accessed via Computer Management. Follow these simple steps to open Disk Management in Windows 8 or 8.1.
How to Tell if Your Version of Windows 8 is...
Not sure if you have a 64-bit or 32-bit version of Windows 8? You need to know so you install the right drivers and software. Here's how to find out.
Are You Seeing a Code 10 Error? Here's What You...
How to fix the This device cannot start. (Code 10) error in Device Manager. Code 10 errors are often due to driver issues.
Trying to Rebuild Windows Boot Configuration...
A complete tutorial on rebuilding the Boot Configuration Data (BCD) store in Windows 8, 7, or Vista. The bootrec command is used to rebuild the BCD.
A Detailed & Step by Step Guide to...
A step by step tutorial to install Windows 8 or 8.1 from a USB flash drive, complete with screenshots and details on each necessary step.
Forgot Your Microsoft Account Password? Here's...
How to reset your Microsoft account password. This procedure may reset the password you use to login to Windows 8, Outlook.com, SkyDrive, Skype, and more.
42 Free Programs to Completely Wipe Data From...
Here are several free data destruction software programs, sometimes called disk wipe software or hard drive eraser software. Last updated July, 2015.
11 Ways to Keep Your Computer Cool
Here are several ways to keep your PC cool. If your computer gets too hot it can stop working and cause damage so keeping the temperature down is important.
Do You Know Every Single Windows 8 Command...
A complete list of Command Prompt commands in Windows 8. Around 230 CMD commands exist in Windows 8, often incorrectly referred to as DOS commands.
Here's What to Do When Your Computer Freezes...
A really frustrating problem is when Windows hangs or gets stuck while starting. If Windows starts to load but freezes without an error, give this a try...
Are You Cleaning Your Flat Screen TV or Monitor...
How to safely clean your flat screen monitor or TV. LCD, LED, and other flat screens require special care when cleaning to prevent permanent damage.
How To Recover Passwords Using Ophcrack
A complete tutorial with screenshots on using Ophcrack LiveCD v3.6.0 (Ophcrack 3.6.0) to crack a Windows password.
15 Free Bootable Antivirus Programs
A list of free bootable antivirus programs. A free bootable virus scanner is what you need to use to remove viruses from your PC when Windows won't start.
34 Free Backup Software Tools: Ranked and...
Reviews of the best free backup software programs, updated July 2015. Use free backup software to automatically back up your files for safe keeping.
How Do I Find My Internet Download Manager...
Lost your Internet Download Manager serial number? Here are two different, but completely legal ways to get IDM working again. No cracks required.
Need to Remove Your Windows 7 Password? Here's...
If security isn't a concern, you can remove (delete) your Windows 7 password, allowing unrestricted access to your Windows 7 computer. Here's how.
How Do I Clear My Web Browser's Cache?
Tutorials on how to clear the browser cache in Firefox, IE, Chrome, and Safari. To clear the cache means to remove copies of web pages stored by the browser.
How To Open Disk Management From the Command...
Disk Management can be opened from Control Panel but it takes several clicks to get there. Try opening Disk Management via its command for a quicker start.
How to Safely Download & Install Software
Software you download could have malware, adware, PUPs, and other issues. Here's how to safely download and install software on your computer.
A Full Review of DBAN, a Free Data Destruction...
Darik's Boot And Nuke (DBAN) is a free data wipe program for completely erasing a hard drive. Here's my complete review of DBAN.
A Full Review of CCleaner, a Free Registry...
CCleaner is without a doubt the best free registry cleaner available. See my full review of CCleaner, a free program from Piriform.
What's an ASPX File and How Do You Open One?
An ASPX file is an ASP.NET Source file. Learn how to open an ASPX file or convert an .ASPX file to another file format.
7 Ways To Find Lost Windows Passwords
Lost your Windows password? Here are several ways to find your lost Windows 8, 7, Vista, or XP password.
Need to Open the Control Panel in Windows 8...
A tutorial on opening Control Panel in Windows 8 & 8.1. Control Panel contains links to most of the tools used to configure various aspects of Windows 8.
Here's How to Access the Advanced Boot Options...
The Advanced Boot Options menu is a menu of advanced Windows startup and troubleshooting modes, including Safe Mode.
Have an ISO File But Need it On a DVD? Here's...
In most cases you'll need to burn an ISO file to a DVD before you can use it. Here are easy instructions for burning an ISO image to a DVD (or CD/BD) disc.
How to Erase a Hard Drive Using DBAN
A full tutorial on using Darik's Book And Nuke (DBAN) to permanently erase all the files from a hard drive.
Don't Have the Latest Windows Service Pack?...
Where to download Microsoft Windows updates and service packs, updated July 2015. Download Windows 8.1 Update, Windows 7 SP1, Windows Vista SP2, & more.
Computer Hardware: Everything You Need to Know
Hardware refers to the physical parts of a computer system. Some basic computer hardware includes the motherboard, CPU, RAM, hard drive, etc.
Operating Systems: Everything You Need to Know
An operating system (OS) is software that manages software and hardware in a computer. Some operating systems include Windows, Linux, and Mac OS.
Is Your RAM Bad? Test it With Any of These Free...
A list of the best free memory test (RAM test) software. Test your memory with a RAM test program to find even tiny problems with your computer memory.
Don't Want to Fix Your Computer Yourself? Here...
Don't want to fix your computer yourself? Here are your options, including calling tech support, finding a local repair service, and a lot more.
The COMPLETE List of DOS Commands
There are nearly 100 DOS commands available in MS-DOS. See a complete list of MS-DOS commands, commonly referred to as DOS commands.
Did a Recent Change Break Windows 8? A System...
A complete tutorial on using System Restore in Windows 8. A System Restore can fix problems by undoing registry, driver, and other changes in Windows 8.
How To Completely Erase a Hard Drive
Easy instructions to completely erase a hard drive. To truly erase hard drive data forever, you may have to do more than format the drive or delete files.
How to Manually Update Drivers in Windows 8, 7,...
Links to detailed instructions on how to update drivers in Windows, specific to your particular version of Windows.
Have an Xinput1_3.dll Error? Here's How to Fix It
Xinput1_3.dll Not Found errors usually indicate a DirectX problem. Don't download xinput1_3.dll, fix the problem the right way.
What's an XML File and How Do You Open One?
An XML file is an Extensible Markup Language file. Learn how to open an .XML file or convert an XML file to another file format.
13 Ways You're Screwing Up Your Computer
I'm sure you're doing everything right but you might want to pass this along to your friends who are probably making all of these mistakes!
Is Your Computer Beeping? Here's What to Do
Hearing beep codes when you turn on your computer? Beep codes are clues as to why your computer isn't working. Here's what to do.
Need to Boot From a Disc Instead of Your Hard...
Detailed instructions on how to make your computer boot from a CD, DVD, or BD disc. You may need to boot from a disc to install Windows, run live CDs, etc.
Never Forget Your Password Again With a Windows...
Having a Windows 7 password reset disk is valuable if you ever forget your password. Once created, you can use it to reset your Windows 7 password.
BIOS Setup Utility Access Keys for Popular...
List of BIOS access keys for major computer systems from Gateway, Toshiba, Dell, Sony, eMachines, HP, Lenovo, Acer, and more.
35 Online Backup Services: Ranked & Reviewed
Reviews of the best online backup services, updated July 2015. Online backup services back up your files to secure data centers over the Internet.
List of Executable File Extensions
A list of executable file extensions. Files with any of these file extensions might be able to execute a task automatically.
Tools to Help Remove Passwords From PDFs
A list of the best free PDF password remover tools for Windows, plus free PDF password crackers and recovery programs for both user and owner passwords.
What's a MOBI File and How Do You Open One?
A MOBI file is a Mobipocket eBook file. Learn how to open a .MOBI file or convert a MOBI file to another file format.
How to Use the Ping Command in Windows
The ping command is used to verify that a device can communicate with another on a network. Learn more about ping and see several ping command examples.
Where to Find Popular Drivers for Window 8 and...
Download the latest Windows 8 & 8.1 drivers for your hardware, updated June 29, 2015. Download Windows 8 sound, video, printer, and other drivers.
How to Use the Windows Command Line to Access...
A complete list of Control Panel command line commands for each Control Panel applet available in Windows 8, Windows 7, Windows Vista, and Windows XP.
What You Need to Know About Windows 8
Basic information about Microsoft Windows 8 including release date, available editions, the Windows 8.1 update, minimum hardware requirements, and more.
How To Partition a Hard Drive in Windows 7
A tutorial on how to partition a hard drive in Windows 7. You have to partition a hard drive before you can format, and eventually use, it in Windows 7.
DLL Files: What You Need to Know
A Dynamic Link Library, or DLL, file is a kind of file that contains specific code that many programs can share. Here's more on DLL files...
How to Fix DLL Errors... the Right Way
The only way to permanently fix DLL errors is by fixing the underlying cause of the issue, not by downloading DLL files. Here's how to do it.
How to Use the Net Use Command in Windows
The net use command is used to manage shared resources. Learn more about the net use command and see several net use command examples.
Have a BSOD With a 0x0000007B Code? Here's How...
How to fix the STOP 0x0000007B code (INACCESSIBLE_BOOT_DEVICE) on a Blue Screen of Death. These are usually driver, virus, or hardware issues.
Easily Format a Hard Drive in Windows 8
Detailed tutorial on how to format a hard drive in Windows 8. You have to format a hard drive before you can save files to it in Windows 8.
Forgot Your Windows Password? Reset It With...
Offline NT Password & Registry Editor is a Windows password reset/remover tool that works nearly 100% of the time. See my complete review of ONTP&RE.
How To Find Your Windows 7 Product Key
Lost your Windows 7 product key? Here's how to find your Windows 7 product key using a free key finder program which will extract the key from the registry.
How To Update Drivers in Windows 8 or 8.1
A complete tutorial on how to update drivers in Windows 8 or 8.1. You might update Windows 8 drivers to fix a hardware problem, enable a new feature, etc.
How to Save a Command's Output to a File
Learn how to redirect a command's output to a file. In other words, how to save the results of running a command to a file so you can view the data later.
Everything You Need to Know About the Control...
The Control Panel in Windows is an organized collection of Control Panel applets, each used to manage a specific aspect of Windows.
What's an FLV File and How Do You Open One?...
An FLV file is a Flash Video file. Learn how to open an .FLV file or convert an FLV file to another file format.
How To Force Windows To Restart in Safe Mode
Here's how to force Windows to start in Safe Mode on the next reboot, assuming you can't do so in other ways like from Startup Settings or the F8 menu.
How To Make Sure Your Drivers in Windows 7 Are...
You'll need to update drivers in Windows 7 to fix hardware problems or enable new features. Follow these easy steps to update drivers in Windows 7.
Have an Ntdll.dll Error? Here's How to Fix It
A troubleshooting guide for ntdll.dll errors, including C0000221 unknown hard errors and crashes. Don't download ntdll.dll, fix the problem the right way.
Think Windows Updates Broke Your PC? Here's...
A detailed tutorial on how to correct problems caused by Windows updates, including security updates pushed by Microsoft on Patch Tuesday.
Need to Clean Install Windows? Here's How
A Windows clean install is useful for fixing serious Windows problems. A clean install will erase everything from your computer. Here's how to do it.
How To Recover Deleted Files
Yes, it is possible to recover deleted files. Try Recycle Bin first, but if it's not there, a free file recovery program can recover deleted files too.
Have an Xlive.dll Error? Here's How to Fix It
Xlive.dll errors are often caused by a deleted or corrupted xlive.dll file. Don't download xlive.dll, fix the problem the right way with these steps.
What's an XLSX File and How Do You Open One?
An XLSX file is an Excel Microsoft Office Open XML Format Spreadsheet file. Learn how to open an .XLSX file or convert an XLSX file to another file format.
Will a Data Recovery Program Undelete Anything...
Will a file recovery tool allow you to get anything back you've deleted? The answer is closer to no than yes, but it's complicated. Here's more...
How to Automatically Repair Windows 7 Problems
A tutorial for completing a Windows 7 Startup Repair. Running a Startup Repair is a good first troubleshooting step if Windows 7 isn't starting properly.
How To Delete Temporary Files in Windows
Instructions on how to delete temp files in Windows. Temporary files that are stored in the Windows 'Temp' folder aren't needed and can be deleted.
Never Download DLL Files! Here's Why
DLL download sites sometimes provide easy fixes for DLL problems by allowing single DLL downloads but you should NEVER use them. Here's why...
Key Combinations to Access Your Motherboard's...
List of BIOS access keys for motherboards from ASUS, MSI, abit, GIGABYTE, Intel, BIOSTAR, EVGA, and more.
Forgot Your Linksys WRT54G Router Password?...
Find the Linksys WRT54G default password, default username, and default IP address here, plus more help with your Linksys WRT54G router.
Don't Have the Latest MS Office Service Pack?...
Where to download the latest Microsoft Office service packs, updated July 2015. Download Office 2013 SP1, Office 2010 SP2, Office 2007 SP3, etc.

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