Computer specs:
Gigabyte GA-P35-DS3 motherboard
Intel Q6600
512MB 8800GT
2 x 1GB Corsair 800Mhz DDR2 RAM
500GB WD HDD
Cooler Master Real Power 550W PSU
My story:
The problem I am experiencing with this computer occurred when, and only when, it has been turned off for at an hour or more. After I press the power button the computer seems to totally ignore me and will not turn on for a random amount of time. No fans start up, no LED's blink, no noise is made. Usually this would indicate a dead PSU or motherboard except when I accidentally left it turned on, about two hours later I returned to see it had started fine. That night I turned the computer off again and encountered the same problem! Basically, it's a 2 hour lag from hitting the power, and the computer turning on. I know the power supply is working because when a flash drive is plugged into a USB port, the LED inside will illuminate.
Now after I turned the computer off the other night it still hasn't started.
SUMMARY
When attempting a cold boot it takes anywhere between 30 minutes to 6 hours for the computer to start. During this time the only sign of life comes from my iPod being able charge when plugged into the USB port. Once the computer started everything ran fine, with the exception of the paused BIOS clock.
nVidia stress test and Micro-Scope diagnostics find no problems.
I have tried previously, and again since it's not turning on at all:
removing components and cleaning all terminals (nothing)
Replacing CMOS battery (nothing)
trying to cold boot with 1 stick of RAM (neither worked)
using another PSU (nothing)
using the current PSU in another computer (it worked perfectly)
booting outside of case to rule out shorts (nothing)
jumpering pins to rule out bad switch (nothing)
attempting cold boot with minimal components (nothing)
Is there anything else I can do to keep faultfinding? At risk of sounding stupid, I checked the CPU contact pins before and did not see any scratches or cracks etc and given it survived being worked at 100% usage for 2 hours and stayed below 60C with a stock cooler it's also prettymuch in the clear.
I have the opportunity to purchase a new motherboard this weekend and just wanted to see if I was correct in assuming motherboard is to blame (I'm 99% sure) before spending more money.
Let me know if you need more information. All help and advice is greatly appreciated!
Gigabyte GA-P35-DS3 motherboard
Intel Q6600
512MB 8800GT
2 x 1GB Corsair 800Mhz DDR2 RAM
500GB WD HDD
Cooler Master Real Power 550W PSU
My story:
The problem I am experiencing with this computer occurred when, and only when, it has been turned off for at an hour or more. After I press the power button the computer seems to totally ignore me and will not turn on for a random amount of time. No fans start up, no LED's blink, no noise is made. Usually this would indicate a dead PSU or motherboard except when I accidentally left it turned on, about two hours later I returned to see it had started fine. That night I turned the computer off again and encountered the same problem! Basically, it's a 2 hour lag from hitting the power, and the computer turning on. I know the power supply is working because when a flash drive is plugged into a USB port, the LED inside will illuminate.
Now after I turned the computer off the other night it still hasn't started.
SUMMARY
When attempting a cold boot it takes anywhere between 30 minutes to 6 hours for the computer to start. During this time the only sign of life comes from my iPod being able charge when plugged into the USB port. Once the computer started everything ran fine, with the exception of the paused BIOS clock.
nVidia stress test and Micro-Scope diagnostics find no problems.
I have tried previously, and again since it's not turning on at all:
removing components and cleaning all terminals (nothing)
Replacing CMOS battery (nothing)
trying to cold boot with 1 stick of RAM (neither worked)
using another PSU (nothing)
using the current PSU in another computer (it worked perfectly)
booting outside of case to rule out shorts (nothing)
jumpering pins to rule out bad switch (nothing)
attempting cold boot with minimal components (nothing)
Is there anything else I can do to keep faultfinding? At risk of sounding stupid, I checked the CPU contact pins before and did not see any scratches or cracks etc and given it survived being worked at 100% usage for 2 hours and stayed below 60C with a stock cooler it's also prettymuch in the clear.
I have the opportunity to purchase a new motherboard this weekend and just wanted to see if I was correct in assuming motherboard is to blame (I'm 99% sure) before spending more money.
Let me know if you need more information. All help and advice is greatly appreciated!