Vista - random hangs and doesn't come back

my computer hangs and doesn't came back even after 2 hours and it happens
when i'm doing anything. it has hung twice just tring to write this question
it hangs even when the computer is idle. and the only solution that works so
far is to hit the reset button

if it helps here are my spec for my computer:
Q6600, p35c-ds3r, gigabyte 8800gts, 4x kingston 1066MHz 1gig RAM, seagate
7200rpm 750GB hard drive. also have 3 fans keeping to cool 1 for CPU + 2 for
case, none are overclocked

what is wrong with my computer?
i have all the updates for everything

Hi,

Run the memory diagnostic tool, you may have a faulty stick. To do so, just
type "memory diagnostic" into the start/search line and the tool will be in
the program listing. Select it, and follow the prompts for the test to run
on a system restart. At the end it will reload Vista and give you a report
as to the condition of your memory.

--
Best of Luck,

Rick Rogers, aka "Nutcase" - Microsoft MVP
http://mvp.support.microsoft.com/
Windows help - www.rickrogers.org
My thoughts http://rick-mvp.blogspot.com

"cab_cool" <cabcool@xxxxxx> wrote in message
news:AB5611C7-D83F-4F48-B10B-3106FD0168EF@xxxxxx