CPU won't boot with stock volts and clocks!!!

[BigAndy]

PC won't boot with stock volts and clocks!!!

Don’t know where the problem is but it is really strange…

OK, I had some Windows issues, but it is another story and I did Windows reinstall. After I finished install I reset CMOS on my DFI Expert and wanted to boot up with stock clocks and volts, but it refused to do so. PC was rebooting every time when Windows loading screen showed up. When I put my 3200+ back to 2.6GHz and to 1.55V it booted up with no problems. It’s doing the same with 3700+ CPU, but it’s not CPU issue as both CPU’s working fine with stock clocks and volts in my 2nd rig.

It makes me think it's something to do with MOBO, but what could cause it?

 

[stocky]

The first thing that comes to mind is the memory. What memory are you running? The DFI can be very fussy about RAM at times so you may have to up the vDIMM to get it to BOOT...

 

[BigAndy]

The first thing that comes to mind is the memory. What memory are you running? The DFI can be very fussy about RAM at times so you may have to up the vDIMM to get it to BOOT...

I'm using Corsair XMS4400 2x512MB.

I thought about memory as well, will swap RAM with my 2nd rig tonight and see if it helps...

Cheers

 

[stocky]

I think that one stick in the furthest slot from the CPU was a BOOT trick, but I'm not 100% sure. Worth a go though, just to test

 

[BigAndy]

Looks like it’s time for new RAM…

I went to System Properties => Advanced => Startup and Recovery (Settings) => System Failure and unchecked option Automatically Restart. This gives you BSOD in case on failure not restart of system so it comes handy and you can see error code. After I dropped BIOS settings back to stock and tried to boot up, but I was getting BSOD with some weird errors one after another and couldn’t boot in Windows. Pulled out my RAM and swapped with my Samsung value RAM from my 2nd rig. Powered up my PC and it booted up straight away with no problems. So it’s meant there is some issue with my Corsair XMS4400 RAM… As stocky said that DFI can be fussy with RAM I wanted to believe that there is nothing wrong with RAM and it’s just DFI’s caprice, but to make sure I put it in into my 2nd rig which running only on stock and never ever has been overclocked. Powered it up and got beeping noise alerting me that something’s not right, switched it off and reseat RAM and gave it another go. This time it was looking OK and booted up fine, but in Windows screen freeze, restarted PC and booted up fine again, few minutes later crash with system restart, booted up again and few minutes later crash again… So it’s indicates something is not really right with my XMS4400 RAM.

Afterwards put it back in my main rig, gave it 2.92V and 260MHz and its up and running (some kind off). In last weeks time I was running it like this and still was getting some odd BSOD crashes from time to time so it’s definitely something wrong.

It is actually a bit odd coz just a couple weeks ago I was running memory test and there wasn’t any errors showing up, but as you can see there is something wrong with it. Now I’m refusing to believe it could be the case with DFI’s fussiness as it was making to crash my 2nd rig as well.

What you recon guy’s? Would it be time for RMA?

Cheers