Posted 06 February 2009 - 09:47 AM
I think a reinstall of the OS might be a bit drastic, at least before other troubleshooting steps are taken. When you get the BSOD, what is the error message that is displayed? This includes the hex codes on the first line, and the error text on the third line (after the paragraph about "A problem has been detected..." Also, is the computer connected directly to the internet, or is it connected to a router? And do you have a software firewall installed on the computer?
Also, I take it from your description that the computer is connected via Ethernet cable. Have you tried swapping out the cable? And finally, as suggested above, try updating the drivers for your network card, as well as the firmware for the router.
The only way to learn anything is to question everything.