Originally Posted by breaker3000
maybe a heating problem perhaps
I don't see how that would have any effect on the internet disconnecting.
Get some good anti-spyware stuff (m$ anti-spyware, spybot s&d, ad-aware) and a good anti-virus (in my opinion AVG Free and AntiVir Personal are the best free ones) Then update them all and run full systems scans.
If that doesn't help then contact ur ISP.