I keep getting "page not found errors" in IE and Firefox.

Eventually I get the page to come up after several tries.

I have 2 other computers on the same network and there are no problems with browsing with them.

I have already scanned for viruses, adware, deleted all cookies and temp internet files and defragged. with no success.

Any help would be appreciated.

TIA,
Buehler91

Welcome to SAF!

How do you connect to the internet(cable, dsl, T1, etc)? Is your network using a router? hub? switch? I would start at the connection. Maybe try a different port or switch with another pc to see if that effects the problem. If it does make a difference, check the cat5 cable as well.

Otherwise, what security software (AV, Firewall, etc) is running in the background? Is it the same on all machines? Check the settings. You may need to repair/reinstall.

Have you tried removing / reinstalling the network setup?

Post back the info / results as there will be more things to try.

changed my dns settings...seems to have helped