Computer takes 4 or 5 attempts to start sometimes

roachyuk

roachyuk

roachyuk

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ok my mate has a computer with the following spec.....gigabyte 890gpa ud3h...phenom quad core ati 5850 xfx...ocz memory and a ocz stealth 500 watt power supply....problem doesnt occur all the time but some days it powers up but does not boot or show anything on screen fans spin and lights on the inside come on....if he turns it on and off a few times it will then boot....we have checked the usual....connections in correct and loose components but all is ok...wondering if anyone has any ideas on this thanks....
 
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no runs at stock .....not changed anything in the bios apart from the memory options to ganged from unganged.....
 
Hmm thats strange usually my pc did that when there was something wrong with my OC.

Restarting is a feature of modern boards, and most will restart under certain conditions.
-When power has been lost to the board. For instance you unplug the PSU or turn it off at the PSU switch. Normally the board is ALWAYS receiving +5VSB power even if it is not in sleep mode.
-When some setting in the BIOS is not correct. This often happens when the auto settings for the RAM are incorrect. This is the most common problem.

If the monitor was not detected you would not be booting. I have to wonder about this monitor issue though. Have you tried the HDMI port?
Click to expand...

Steps I took:

- Updated BIOS (several versions had "improved compatibility" as the reason for the new BIOS). Changing BIOS alone never solved the problem,
- Uninstalled the Asus OCing utilities to ensure it wasn't screwing with BIOS in any way and interfering with the next boot.
- Cleared CMOS, loaded defaults, made changes I needed, and saved them.
- Manually set memory voltage and timings, hoping the board would not "test" for the best memory settings.

I wound up doing this at least twice before the problems stopped. I've since reloaded the Asus utilities, returned memory to auto, used the utilities to OC and return to defaults, and the problem has not recurred.
Click to expand...

these are couple things i found regarding your problem maybe it will help :)
 
Thanks for the info satrox i am going to go around in the next day or so to check the bios version see if there is a new one....ill reset the bios and try that...just another thing i think it only does it from cold.......thanks again
 
ok so went to have a play with it today.....comes on about one in every 10 attempts ive took every thing out and just the board memory and cpu...used onboard graphics still the same...turns on everything lights up and spins.... but does not boot to screen atall....i am gonna try a new power supply tomorrow see if that will get it up and running.....
 
I found that faulty PSU's have been degenerative i.e take more and more tries to start rather than a fixed number over time.

Or they go when im out of the room, I come back in and the PC is switched off when I know I left it on. Other times ill come back with an acrid smell in the room and then ill know its blown.
 
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