did it ever blue screen before you fixed the CPU cooling problem?
is it possible you changed a BIOS setting and forgot? reset the BIOS/CMOS to default settings if you haven't already, just in case.
run this to test to see if any of your RAM sticks are faulty
http://www.memtest.org/#downiso
burn it to a cd and set your BIOS to boot from CD like you would if you were installing an operating system. let it run for a while (at least 45-60 minutes) to see if there are any issues.
is it possible you changed a BIOS setting and forgot? reset the BIOS/CMOS to default settings if you haven't already, just in case.
run this to test to see if any of your RAM sticks are faulty
http://www.memtest.org/#downiso
burn it to a cd and set your BIOS to boot from CD like you would if you were installing an operating system. let it run for a while (at least 45-60 minutes) to see if there are any issues.







you tried a new 4GB stick and it works fine?
