Before three days I upgrade my pc from (q6600+G33+DDR2) to (i7+x58+DDR3) and every thing works grate, no stability issues, very good temps, and grate performance (as expected). After three days of using my pc suddenly turn off. When I try to turn it on, it turns on for less than a second and after it dies.
I checked cables and nothing is loose or anything like that.
I test the power supply to another system and it works.
I replace the graphics card with a 8800GTS and still does the same thing. I try to turn it on with out a graphics card still does the same thing.
I remove the battery to clear CMOS several times and still no help there.
I removed all power and SATA cables connector to HHD and DVD drive and all the fans, didn't work either.
So I end up having the PSU connected only to the cpu+cpu_Heatsink+mobo+ram and still does the same thing.
Any help would be appreciated.
CPU: i7 920 D0
CPU Cooler: Prolimatech Megahelms
Motherboard: GIGABYTE GA-EX58-UD4P
RAM: OCZ DDR3-1600 6GB
Vega card: NVIDIA Geforce GTX 295
Hard Drive: Samsung SpinPoint T166 HD501LJ 500GB
Power Supplie: Corsair 620W HX Series
Case: THERMALTAKE SPEDO ADVANCE
Operating system: Windows VISTA Home Premium 64bit
Do not past the POST(no beep).
It turns on for less than a second and after it dies. But some times it turns on for less than a second and after it turns off for two seconds and then agene it turns on for less than a second and dies.
Some thing that I forgot to mention is that from the first day of my upgrade the mobo never post something on the screen (even if I have enable from the bios ‘show starup logo’) on the start up and after boot windows normally with out any issues until now that cannot even turn on.