Internet keeps crashing my PC !!

[rocketpants]

Hi there. not sure if this is the place to ask for help..but if you can offer advise it would be apprecaited..
Anyway. i bought a pre-owned pc that after a few teething problems with the heatsink & cooling, now seems to be ok ..i.e I can run BF2 online no problem at all..However when surfing the net it randomly frezzes for a second, goes to a black screen & reboots to start up !!!...this happens quite regularly..however one programme seems to result in this error EVERY time i use it, & that is google earth, you can almost set your watch by it, put a town or city name in, try & zoom in..Crash !!!....Simply dont know what to do on this one...
P4 processor
250 gb HD
1.5 gig of Ram
Radeon x1800xl

So as you can see not a bad system...Any ideas ??
Many Thanks in Advance

 

[~mr mixx~]

bump

-edit-

bumped because other duplicate thread was locked.

 

[CrackerJacker1]

its a ram problem
looooool

 

[blackjack]

Run an antivirus and spyware program to see i you have any nasties as it sounds to me it could be a virus. check your firewall is upto date