I have a working desktop computer (windows XP) in my house, and I bought a router and connected a second destop to it (also windows XP). When I first connected it, my internet on the second computer worked just great, but then when I restarted my second computer, its internet no longer works. And not just internet explorer, but firefox doesn't work, iTunes and QUICKTIME player also doesn't work for some reason. Every time I click on explorer or any of those programs, I get an error message asking if I want to send an error report to microsoft. All of my games on that computer still work, and the first computer seems unaffected. I'm not sure what's going on, but any advice would be more than welcome. Thanx in advance.sounds like a problem with the connection from the third party router and the computer.Turn off computer. Disconnect router, and modem from power source for 30 seconds.
Power them back on.
Restart computer.

If that doesn't work, bypass router, and connect computer straight to the modem.

If that doesn't work...
Go Start>RUN (Start search in Vista), type in:
cmd
Click OK (in Vista, while holding CTRL, and SHIFT, press Enter).

In COMMAND Prompt window, type in following commands, and HIT Enter after each one:
ipconfig /flushdns
ipconfig /registerdns
ipconfig /release
ipconfig /renew

Restart computer.

If that doesn't work...
Go Start>Run (Start search in Vista), type in:
cmd
Click OK (in Vista, while holding CTRL, and SHIFT, press Enter).

At Command Prompt, type in:
netsh int ip reset reset.log
Hit Enter.
Type in:
netsh winsock reset catalog
Hit Enter.

Restart computer.


If that doesn't work...
Download, install, and run WinSockFix: http://www.softpedia.com/get/Tweak/Network-Tweak/WinSockFix.shtml
Restart computer, and check again.

If that doesn't work...
Download Dial-A-Fix (DAF):
http://wiki.lunarsoft.net/wiki/Dial-a-fix#Mirrors.2Fdownload_locations.2C_and_articles

Have XP CD available in case DAF needs a file. Likely not!

Check all boxes on the screen (clear any restrictions if it shows any)
Then click GO!

When the entire page is finished click the HammerHead at BOTTOM to go to the second DAF page.

Here, one at a time, do the below:

Reinstall BITS
Reinstall Windows Firewall
Repair Permissions
Reset networking

Watch for any File not found or other errors and make note as this may lead to the fix!

Restart computer.