PC restarts 50 times before it posts.

BluD

BluD

BluD

Soldato
Joined
6 Jan 2013
Posts
3,774
Location
Yorkshire
Hey there, I just started having a problem with m PC that I hoped someone could help with, the PC started doing a double boot, then triple etc....until sometimes it restarts many many times until it finally posts, after posting the PC performs as normal, all the overclocks work fine etc.

If I need to restart the PC for am update I get the same issue, even if the PC goes into sleep mode the same thing.

The Mobo basically stays dead while is restart looping, no LEDs or anything, the only thing that gets power is the fans. I tried all the usual stuff, disconnected everything except the Ram, PSU and CPU. I reset and reflashed both bioses and tried leaving the battery out for a while.

I gave in the other day suspecting a faulty mobo and bought a replacement which wasn't easy since all the z97 boards seem to sell for way more than they cost new. I had to take a small downgrade to a gaming 5 but it was the only z97 board I could find not going for stupid money. I just finished putting the new board in and it did exactly the same as it does with the other board :(

Im starting to think now maybe its a problem in the PSU, I don't think it can be the CPU or RAM since the board isn't powering up at all. Would a blown capacitor cause the symptoms im getting? Or is it likely to be something more complex, I don't mind changing the odd capacitor but I haven't got the expertise to be testing the PSU for faults. I do have a multi meter so if anyone knows there way around a PSU is there any tests you could suggest?

Any suggestions would be great, I don't mind having a backup Mobo but I don't wanna end up with a spare PSU too if I can help it.

Cheers.
 
A backup PSU is eminently more useful - it will be compatible with every build you do for a long long time.

While you could poke around in your PSU, it's safer and easier to try a known good one first. Yes it does sound like a PSU issue if you've ruled out the motherboard.
 
Took the Lid off the PSU and all looks fine in there, all the caps looks pristine, nothing is burned out or discoloured, ran out of stuff to try, guess ill order a new PSU. :(
 
Ordered a 1000w G2, hopefully it will last a bit longer than the 850, but it will also mean I wont have to get all the old cables out of the zipties :)
 
Any chance you could RMA the 850 back to EVGA for testing? Not sure their policy on accepting returns when the fault isn't so obvious but might be worth a shot? Pretty sure they had 10-year warranties...
 
I could do if I hadn't already replaced the fan when it developed a tick, I put a much better fan in there but because I had taken the cover off im pretty sure the warranty would be void. My last PSU lasted about 8 years so I wasn't expecting this one to break anytime soon, that's why I just changed the fan rather than sending it back.

To be fair it still might not be the PSU at fault here, maybe the CPU is causing the fault, seems unlikely but I don't wanna blame the PSU until I have tried the new one.
 
Yeah i have stripped it down to just mobo(new), PSU(new), 1 ram, CPU and a keyboard running on a cardboard box on my desk. Everything has been at stock speeds since the problem started except for when i've been testing stuff trying to work out what component is at fault.

The new PSU just arrived, i plugged it in and im getting the exact same problem.

At this point the only thing i havent tried is a new CPU and ram which i have no spares of, since its unlikely both sticks have developed a problem at the same time then i think its gotta be the CPU. Seems strange that when it does starts up it runs fine though, it benches and stress tests just fine all the overclocks and voltages all work fine.

Im trying to come up with new things to try atm, im gonna try another wall socket incase the one im using is faulty and the PSU detects it or summat, and im gonna try digging out another keyboard....after that im stuck, anyone else got any ideas?
 
Hmmm, I've found that most issues with "RAM sockets" or "Memory controller in CPU" are actually related to issues in the CPU socket. A few bent pins etc. I had a socket with pins that had been bent and straightened that would boot intermittently. I think motherboard flex made it worse. That PC is now fine day to day but if I move the case, say to stop a fan, it almost always hangs.

Is the CPU slot ok? Tried removing and reinserting?
 
Still no luck, i tried taking the speaker out of my old case to see if its givving any beep codes but no such luck, i guess its not getting far enough in the boot cycle to show anything, does anyone know if its safe to turn on teh mobo without a CPU in? i tried it without the ram but it just did the same restart loop thing.
 
LuckyBenski said:
Hmmm, I've found that most issues with "RAM sockets" or "Memory controller in CPU" are actually related to issues in the CPU socket. A few bent pins etc. I had a socket with pins that had been bent and straightened that would boot intermittently. I think motherboard flex made it worse. That PC is now fine day to day but if I move the case, say to stop a fan, it almost always hangs.

Is the CPU slot ok? Tried removing and reinserting?
Click to expand...

In one of the mobo sockets the pins look a bit sketchy but in the other one theyre perfect, not one out of place, but its producing the same fault on both, im guessing its CPU fault then maybe, dunno how thats just developed, ive been running fairly low voltage and overclock recently as i havent been playing anything demanding.

The PC is solid stable when it actually starts, it doesnt hang, even when im yanking it out from under my desk it runs fine still.
 
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Im gonna go out and get a stick of cheap ddr3 to rule that out, then i guess if it still doesnt work its the CPU and ill have to start saving for a new system.
 
BluD said:
In one of the mobo sockets the pins look a bit sketchy but in the other one theyre perfect, not one out of place, but its producing the same fault on both, im guessing its CPU fault then maybe
Click to expand...
But how about the CPU socket itself, not the RAM slots? It's a longshot though really.
 
I managed to get my hand on an old ivy bridge system and i tested my Ram and PSU, theyre both working fine, I also tried the ram out of that system in mine and got the same restarting problem so i guess that rules them out, so it looks like its the CPU, im gonna take it out give it a good clean off with alcohol then i guess thats all i can do for now.

Hopefully if i ring Rainforest up and be nice to them they will accept this new PSU back since its only had a few minutes use, maybe if i pay a restocking fee, that £180 will go a long way towards getting me a used 4790k i hope.
 
Bought a z370 system, this lot can go in the bin now :)

I was hoping to get a few more years out of that system, maybe ill have better luck on the next one.
 
I still never found out if both my Mobos are faulty or the CPU is faulty, it was a nice CPU and it does seem a shame to bin it, but i wouldnt wanna send someone faulty parts and break their working parts in the process. I just stuck the Ram on ebay, i tested that out of the z77 system i borrowed and it was working fine so i figure ill probably get £50 to go towards the new system from that.
 
BluD said:
Hey there, I just started having a problem with m PC that I hoped someone could help with, the PC started doing a double boot, then triple etc....until sometimes it restarts many many times until it finally posts, after posting the PC performs as normal, all the overclocks work fine etc.

If I need to restart the PC for am update I get the same issue, even if the PC goes into sleep mode the same thing.

The Mobo basically stays dead while is restart looping, no LEDs or anything, the only thing that gets power is the fans. I tried all the usual stuff, disconnected everything except the Ram, PSU and CPU. I reset and reflashed both bioses and tried leaving the battery out for a while.

I gave in the other day suspecting a faulty mobo and bought a replacement which wasn't easy since all the z97 boards seem to sell for way more than they cost new. I had to take a small downgrade to a gaming 5 but it was the only z97 board I could find not going for stupid money. I just finished putting the new board in and it did exactly the same as it does with the other board :(

Im starting to think now maybe its a problem in the PSU, I don't think it can be the CPU or RAM since the board isn't powering up at all. Would a blown capacitor cause the symptoms im getting? Or is it likely to be something more complex, I don't mind changing the odd capacitor but I haven't got the expertise to be testing the PSU for faults. I do have a multi meter so if anyone knows there way around a PSU is there any tests you could suggest?

Any suggestions would be great, I don't mind having a backup Mobo but I don't wanna end up with a spare PSU too if I can help it.

Cheers.
Click to expand...

Hi BluD.
Did you attempt to raise voltages to the CPU and RAM? I too had a problem which sounds exactly like what you have described.

I have been running my i5 2500K system, with a Asrock Z87 Extreme 4 Gen3 motherboard + Corsair RAM.

Before raising voltages my system would cold boot cycle 5-50 times. spinning fans, spinning hard drives, even attempting to boot Windows 10. But it would fail. And even after hours of usage may crash.
Since then, I might get 1 cold boot failure, and plain sailing during gaming and intense usage.

Please give it a try. Regards.
 
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