Any thoughts on problem solving boot issue

FredBasset

FredBasset

FredBasset

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Joined
22 Aug 2009
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218
I have a Sandybridge i7 2600 and Asus P67Pro system. It was an OCUK bundle at 4.6Ghz. Its been a great system although would infrequently fail to POST although a second boot would solve it.

Over the last couple of weeks its become a pain to boot, requiring perhaps six attempts. Once it has booted though it is completely stable.

I'm just thinking about where to start troubleshooting, any ideas on don't know whether to try a new motherboard, new cpu or trying a new psu (currently a Corsair TX850).

Any thoughts would be appreciated.

Regards
Fred
 
Where in the boot sequence is it failing? does it start at all or fail during windows loading etc?
 
Have you tried resetting the cmos (which will lose your overclock settings) and see how it goes after that?
 
That didn't work, but I found something interesting. I always turn off the PC at the mains because I have a number of usb devices attached that draw power.

However if I leave it turned on at the mains and go to it 6 hours later it boots first time.

Any thoughts please?

Regards
Fred
 
FredBasset said:
That didn't work, but I found something interesting. I always turn off the PC at the mains because I have a number of usb devices attached that draw power.

However if I leave it turned on at the mains and go to it 6 hours later it boots first time.

Any thoughts please?

Regards
Fred
Click to expand...

I have a similar problem with my Gigabyte Z77-D3H what I do is put it into standby rather then shutdown which stops it from going through the POST routine every time I turn it on. If I remove my overclocks and run it at stock it boots first time every time and I know my overclock is stable as I have run Prime95 for 10 hours.
 
Right, I've made some progress. Firstly I reverted to the last but one BIOS, now it fails to boot first time but it does the second time. Changing CMOS battery did not help.

Any ideas to get rid of the failed boot?

On the plus side its now stable at 4.7Ghz!

Regards
Fred
 
does it only do it from a cold startup? or when warm?

setting up your memory correctly? or using x.m.p

maybe one/two clicks more dram v and vccio?
 
Do you have PLL overvolting enabled? There is something else that caused me problems with reboots, I think it's the Option ROM setting but need to check to see exactly what it was.
 
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