Hi,
Because the problem could be either hardware or software, I think
you can try covering them both:
1. download the latest motherboard BIOS and flash. Follow
instructions and dont flash wrongly. Also read the motherboard
manual and set the correct jumper settings etc, to suit your other
hardwares. This is important I think, since you got a new
motherboard 4 months ago.
2. make sure you connect your every hardware parts properly, no
loose connections etc.
3. go to BIOS and choose the default settings or fail-safe
settings.
4. then update your Windows with every patches.
5. see your device manager, check there is no yellow exclamation
mark.
6. update your video card driver, sound card driver, update
everything you can find, from manufacturers websites.
7. update your anti-virus and anti-spyware and run them.
After you have completed this step, see whether you still get
sudden power-off. If not, then good. If the problem still
exists:
- restart and press F8, then load Windows Safe Mode.
Now test again and wait, see whether it will power-off. If it
doesnt, that means the cause is in one of your services that load
and run during normal Windows load. But if it still power-off
during this Safe Mode, most likely hardware/ motherboard/ wiring
problem.
For Windows problem, if you can't isolate the cause, dont waste
time in frustration, back up your data to another partition or to
second disk, then format and re-install. This will save you
time.
For hardware problem, check again your motherboard manual. If you
still can't troubleshoot it, can consider bringing your comp to a
service shop. This saves you time.
