Computer shuts off only when running blender

[FloppidyDingo]

I have just upgraded my graphics card from a GeForce 8400 to an ATi Radeon 4800, and everything runs beautifully. My computer can run intense games near flawlessly, and the Dolphin Gamecube Emulator has no issues. But when I run Blender to do some animations, my computer just shuts off within five minutes, even with no objects on the scene. My power supply is an Ultra V series 400W. All of the temps are where they should be. Blender seems to be the only thing that causes the shut off, but my computer stays on during anything else. Can anyone help me figure out what is going on, and the last thing I want to do is get a new Power Supply.

 

[KKAW]

Blender is a very CPU intensive program.

Have you done any overclocking?

Full specs of PC Please.

Install Aida 64, MSI Afterburner to check your CPU & GPU when using blender.

 

[FloppidyDingo]

Blender is a very CPU intensive program.

Have you done any overclocking?

Full specs of PC Please.

Install Aida 64, MSI Afterburner to check your CPU & GPU when using blender.

I had initially overclocked my cpu, but the system still cuts off after I turn off the OC.

Full PC specs:

M3N78-VM motherboard

ATi Radeon 4800 GPU (unsure of specific version)

6GB 800Mhz DDR2 RAM (only 3.3 GB usable)

Maxtor DiamondMax 21 320GB SATA HDD

Seagate Barracuda 1TB SATA HDD

400Watt Ultra V series PSU

AMD Athlon X2 2.5 GHz CPU (was overclocked to 2.87 GHz)

Windows 7 32bit

I should also mention that my motherboard also makes weird squeaking noises, possibly coil whine.

 

[William Norberg]

Are you sure it's your MoBO and not your PSU that is making the whiny noises? The GPU you're using is pretty power hungry (if it's the 4850 or 4870). To me honest, i think it's time to upgrade if you're going to use blender. Install CPUThermometer and see what temps you get to when rendering in blender, could be insufficient cooling.

 

[FloppidyDingo]

Are you sure it's your MoBO and not your PSU that is making the whiny noises? The GPU you're using is pretty power hungry (if it's the 4850 or 4870). To me honest, i think it's time to upgrade if you're going to use blender. Install CPUThermometer and see what temps you get to when rendering in blender, could be insufficient cooling.

Actually, I found out it was my chipset overheating. I screwed a fan over it and cut a huge hole in the side of my case, and by doing so drastically reduced the number of times the power cuts. My case currently has God awful cooling, so I'll just buy a new one. My power supply is fine, but I'm going to buy a 600W one anyway. And I am absolutely sure it's my mobo, although the psu makes periodic clicking sounds when I move stuff around in blender. The improved cooling reduced the clicks. My mobo has been coil whining ever since I started overclocking, and I can't seem to make it go away no matter what I try. But insufficient cooling was the culprit.