Instructions
Players Unable to Join Your Games
Check your IP address online and make sure it is not the same as another player. If the IP addresses are the same, contact your internet service provider to get multiple IP addresses.
Click the "Start" menu on your Windows Start Bar to check the firewall settings.
Click "Control Panel."
Select "Windows Firewall."
Select "Allow a program or feature through Windows Firewall." Click on any boxes referring to "StarCraft," Blizzard and battle.net.
Securing Your Computer
Download and update a reliable anti-spyware and antivirus program.
Run the software. Be sure the scan is as thorough as possible.
Fix any problems.
Update Your Computer
Click the "Control Panel" in the Windows Start Bar and find "Windows Update."
Run and download any recommended updates. Restart your computer and check for more updates.
Repeat until Windows Update does not find any more updates.
Turning Off Unnecessary Applications:
Click the "Start" menu in Windows and type "msconfig" into the search bar.
Go to the "Startup" tab and unclick any programs that are not necessary for starting your computer. These include an internet browser, Windows Update and Adobe Acrobat. These are all programs that you can run when necessary, instead of at startup.
Click "Apply," then "Okay," and restart your computer.
Drastic Actions
Call your internet service provider and have them test your connection and send a technician to diagnose any other problems.
Replace your modem and/or router if they are more than 2 years old or if the technician recommends it.
You may need to reinstall Windows. Copy any documents that you do not want to lose to an external hard drive.
Insert your Windows install disc into your disc drive.
Restart your computer. If your computer boots up normally, restart again and repeatedly press "F8" until a boot menu appears. Click on the "Booting From Disc" option.
Select the "Custom" option.
Select the hard drive where you want to install Windows. If you have multiple hard drives or multiple partitions, it may be a good time to format these as well to delete malware.
Select the "Format" option. If you cannot find this, look for "Show More Options" and "Format" should appear. Repeat this process for any additional hard drives and delete any partitions.
Allow Windows to install on your hard drive after formatting. At this point, all stored information should be deleted from your hard drives and partitions.
Follow all of the prompts during the installation process. Be sure to have your Windows retail key ready. Register your copy of Windows.
Use Windows Update to install updates.
Reinstall your backed up documents, as well as any games, including "StarCraft."