My computer is giving me problems when I am using the internet. I start browsing, everything works fine. Few minutes later it all fails, I try to surf a web page and it doesnt connect to it, I try to send and instant message and it can't be sent. If I reboot, it starts working again, but still fails again. I know it's not the connection itself because it works on other computers just fine.

I installed new drivers for the ethernet (Realtek RTL8139/810x Family Fast ethernet NIC) and still having the same problem.

Im running XP Pro on a Compaq Presario 700.
Can anyone help me???