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Computer Shuts Down+randomly, does not turn on for a while.

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May 30, 2011 12:39:50 AM

Hi,

This is a freshly built machine, and the problem manifested during windows install, so it is a hardware problem.

The machine works for some hours, but then restarts without warning. First, it restarts without warning, but with a complete shut down - windows closes all programs, displays the "windows is shutting off screen" and so on. After the restart, the machine survives a shorter time, turning off more abruptly. By the third or fourth cycle, it barely makes it to the boot screen before restarting. The only way to break the cycle is by cycling the power supply. Letting the computer sit for a while, restores it to the previous state.

The problem occurs at times that are sometimes consistent - always at 6:45 am, system time, but others too.

This seems like an overheating issue, but checking temps on motherboard, CPU, and Video did not show anything weird. I suspected power supply issues, but an identical replacement did not solve it. Resetting CMOS did not help.
Disconnecting DVD player+HDD did not help (the computer started restarting from BIOS.

The specs of the machine are:

COOLER MASTER GX Series RS650-ACAAE3-US 650W ATX12V v2.31 80 PLUS Certified Active PFC Power Supply

ASUS ENGTX570/2DI/1280MD5 GeForce GTX 570 (Fermi) 1280MB 320-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

Seagate Barracuda XT ST32000641AS 2TB 7200 RPM SATA 6.0Gb/s 3.5

LITE-ON CD/DVD Burner - Bulk Black SATA Model iHAS124-04

Intel Core i7-960 Bloomfield 3.2GHz LGA 1366 130W Quad-Core Desktop Processor BX80601960

G.SKILL PI 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL6T-6GBPI

ASUS P6X58D-E LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
a c 136 B Homebuilt system
May 30, 2011 9:44:12 AM

Id say its a hardware problem too

the consistent time of the shut down might indicate a motherboard problem .
You could try flashing the bios
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