Computer shuts down

Right in the middle of using the computer it shuts down. It also doesn't restart, when you load a program and says it has to restart, it just shuts down. When I turn the power button on again it won't until after a few tries.
HELP???

 

=Aubichdo;Hi Evan. Thanks for your advice, i did the above, but i didn't get the error message (AKA a BSOD), it's still shutting down, i was right in the middle of encoding video on DVD Flick and it shut down and the encoding is going to take forever, it's only done 6% in 22:56 second time around. I was downloading a movie too, but i exited out of that including the accelator for Bittorrent, still terribly, terribly slow. I will time it from the time i just leave the computer alone and when it shuts down on me again. My encoding is now 7% in 28:20.

 

The system might be overheating. It will have a temperature overload which shuts it down when it reaches a certain temperature.

 

=aubichdo;I've moved my CPU onto the desk so that it's open for air on all sides, here is my sensor temp after it has been running for about 10 minutes now: Sensor

--------------------------------------------------------------------------------


Sensor Properties:
Sensor Type ITE IT8705F (ISA 290h)
Motherboard Name Gigabyte 8S661FXM Series

Temperatures:
Motherboard 38 °C (100 °F)
SAMSUNG SP0802N [ TRIAL VERSION ]

Voltage Values:
CPU Core 1.15 V
+1.8 V 2.67 V
+3.3 V 3.26 V
+5 V 3.52 V
+12 V [ TRIAL VERSION ]
Debug Info F FF FF FF
Debug Info T 245 77 38
Debug Info V 48 A7 CC 83 B9 C0 8F (77)

I have Everest installed if you need more info.

 

I would normally expect a readout for the CPU temperature, that would the one with the thermal cut-out. You could go into the BIOS/Startup settings and see if there is a CPU readout there. Checking the temperature will be comparison from a cold start to when the system has shut down (or you think it might be close to shutting down).

Some of the voltages are "out" (+1.8 and +5.0).

The readouts might be out because the computer is OEM (like a HP, Compaq, Gateway, etc) and Everest needs information from the manufacturer about the computer to read the information.

Check that the motherboard chipset drivers are installed.

Take note of voltages. The PSU may be overloaded or is about to fail. Again, I would look in the BIOS settings for readouts to confirm those readings.

Matt