I had my computer for about 3/4 years and its been working fine, but recently its been restarting itself at random points. I'll be browsing the internet, looking up stuff and it will just shut down and restart itself. It turns back on and says that Windows shutted down to prevent itself from a crash, but i've done a virus check and there's nothing wrong. And i tried doing a windows update from the microsoft website but the page never loads. But the internet is working fine e.g google.com and whatnot is all working. Anybody might know whats wrong with the computer and how to resolve this issue? Thank you!

Right click My Computer, Properties, Advanced tab, Settings button (Startup and Recovery), uncheck Automatically Restart. Now you should get an error message when it happens again. ------------------ Find a list of STOP MESSAGES(BSOD) here: http://aumha.org/win5/kbestop.htm