so my home desktop pc normally works absolutelly perfect, especially for the not overly demanding function as being a music/movie center combined with paralell browsing, photo editing.
Nothing is overdriven, runs on factory specific settings.
Unfortunatelly about 3 out of 10 times, in the beginning switch on (i.e. pressing the power button) the fans, harddrives are starting to spin, but the screens stays black and the usb slots are without electricity.
Even if I restart, or power off and switch it back again this situation would not change anything. The only solution seems to be to reset the motherboard with the jumper (with a switch actually), and then start the pc again.
my first idea was to replace the power supply, even though I am using an absolutely top of the line corsair supply, and as expected after replacing it (for the same type) the problem is repeating itself. Also based on the software "speedfan" the voltage figures seems normal.
As an experienced hardware guy, I can live with the issue, however it is annoying as hell, and thus would like to solve it.
Can you please help with some ideas?
The pc parts:
ASUS P8P67 motherboard
Zotac gtx 780 graphic card
Corsair AX 860 power supply
I5 1555 3300 Ivy Bridge LGA1155 6MB L3 cache processor
4*4gb 1600 ddr3 memory
1. SAMSUNG HD-501LJ SATA
2. SAMSUNG HD-753LJ SATA
3. WDC WD20EARX-008fb0 2TB
4. WDC WD30EZRX-00D8PB0 3TB
Pioneer DWD-RW DVR-212D
Corsair water cooler H70
Asus xonar essence stx
Corsair k95 vengenance keyboard
Corsair 600T house
also running something like 6 house coolers from Noctua