I built this PC about 2 months ago, other than a few minor issues, the system worked fine until yesterday. The system just die out of a sudden as if someone just turn off the power supply.
Now, when I press the start button - all fans (on processor, case, PS) spin for a split of second and stop. ( The LEDs too will go on and off during that time) Subsequent pressing on start button produce nothing. Only after turning power off by flipping switch on PS or unplugging the cord from electrical outlet and plugging it back makes it possible to try to turn it on again. But then again... all fans (on processor, case, PS) spin for a second and stop...there were no video input on the monitor(s).
I also noticed that the system behaves differently if I remove the ATX(12V, 2x4)) connector. All the fans and leds will continue to run/lit, but there is no video signal. During this time, 12V is measured on the ATX connector . (Wondering whether there is a way for me to check whether the 12v circuitry on the motherboard is shorted..?)
I have replaced the power supply with a brand new Thermaltake 750W PS .. unfortunately, the result is the same.
I would appreciate if you have any clues that I can use. Thank you all in advance!!!
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CPU: AMD Phenom II x61075T
Heat sink/fan: AMD, provided with processor
Motherboard: MSI 790FX-GD70
Memory: 2x4 GB DDR3, Corsair
Video Card: EVGA 210 (3x)
Hard Drive: Hitachi 1TB
CDRW: Memorex 24X DVDRW
Case: CM HAF 912
Power supply: Thermaltake TR2 650W.
Monitor: Asus VE247H
Keyboard/Mouse: Logitech cordless
OS: Windows 7
Now, when I press the start button - all fans (on processor, case, PS) spin for a split of second and stop. ( The LEDs too will go on and off during that time) Subsequent pressing on start button produce nothing. Only after turning power off by flipping switch on PS or unplugging the cord from electrical outlet and plugging it back makes it possible to try to turn it on again. But then again... all fans (on processor, case, PS) spin for a second and stop...there were no video input on the monitor(s).
I also noticed that the system behaves differently if I remove the ATX(12V, 2x4)) connector. All the fans and leds will continue to run/lit, but there is no video signal. During this time, 12V is measured on the ATX connector . (Wondering whether there is a way for me to check whether the 12v circuitry on the motherboard is shorted..?)
I have replaced the power supply with a brand new Thermaltake 750W PS .. unfortunately, the result is the same.
I would appreciate if you have any clues that I can use. Thank you all in advance!!!
----------------------------------------------------------
CPU: AMD Phenom II x61075T
Heat sink/fan: AMD, provided with processor
Motherboard: MSI 790FX-GD70
Memory: 2x4 GB DDR3, Corsair
Video Card: EVGA 210 (3x)
Hard Drive: Hitachi 1TB
CDRW: Memorex 24X DVDRW
Case: CM HAF 912
Power supply: Thermaltake TR2 650W.
Monitor: Asus VE247H
Keyboard/Mouse: Logitech cordless
OS: Windows 7