msi p67a switching on and off on its own

mond4uk

mond4uk

mond4uk

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Joined
24 Nov 2011
Posts
7
Hope someone can help, with a very strange problem. I just install a new motherboard, cpu and ram. Once installed everything was working perfect, then the next day while in game it crashed, since then it wont post. It just coninualy keeps switching on and off by itself after only turning on on once. he only way to stop this is by turing off from the PSU swich or unplugging.

I taken it apart and rebuild with no success. I have tried powering up without RAM, GPU etc installed but still have same problem. I hope someone out there knows about this issue and has the solution. My specs are:

MB - MSI P67a
CPU - core i5 2500k
8GB RAM
CPU - nvidia 4700gtx
PSU - corsair tx750

thanks to anyone with help
 
by skeleton setup do you mean powering up with just the cpu as I have tried that, no matter what I add or take out it just keeps powering up and down on its own. I have tried the PSU paperclip test and the PSU stays on while powering a fan.

Do you know of anything else I can try

(sorry just tried skeleton setup outside of case, still no same issue)
 
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yeah cmos cleared, unfortunatly I dont have a multimeter to test with. I realy dont think it is the PSU. Do you think it could be some issue with the onboard power button on the motherboard? the P67a has a button on the mainboard itself for turing on and off as well as reseting. If it is that, not sure what I can do about it.
 
ok getting somewhere now, I am using the skeleton setup. first same issue but moved ram to dimm slot 2 and its now powering on as normal. so I guess the MB is somehow shorting and or my other ram stick is faulty or the 1st dimm slot is.

Time to get stuck back into troubleshooting.

Cheers for your help, will post once (hopefully) fully resolved.
 
ok can now fully book system. the only issue now is do I have a faulty RAM chip or is there something wrong with my DIMM slots? I have just the 1 chip installed and the system will only boot with the chip in DIMM slot 2 although everthing I know and have read is that you should always start with DIMM 1. What you think the issue is, the RAM or the DIMM slots?
 
the other stick def seems to be the problem when I use just that stick it goes back to the original problem. So I can now get back on windows etc, I still have an issue on POST tho. I get 1 been then 3 quick short beeps which indicate a RAM issue. I have tried the memory test via the bios and found no issues. Do you think I need to replace RAM altogether?

p.s I have an Antec Kuhler cooler
 
yeah the good stick is working in DIMM 1, but I am still getting the beeps. Its actualy 1 normal beep then 5 quick beeps. not sure what that is?
 
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