Major Problem!

Hi,
Well, my laptop is an Advent 7016, 512MB ram, 30GB hard drive pentium 4..
FS9 sometimes runs well with it..sometimes, its shuts down my laptop instantly..
I have no idea what is causing this, the harddrive has been reformatted and everything..windows re-installed..but to no avail..
any suggestions on what could be causing this and any solutions would be greatly appreciated.
P.S. i have searched google, which i could not find an anwser.
thank you,
ben
Well, my laptop is an Advent 7016, 512MB ram, 30GB hard drive pentium 4..
FS9 sometimes runs well with it..sometimes, its shuts down my laptop instantly..
I have no idea what is causing this, the harddrive has been reformatted and everything..windows re-installed..but to no avail..
any suggestions on what could be causing this and any solutions would be greatly appreciated.
P.S. i have searched google, which i could not find an anwser.
thank you,
ben