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MSI Z77A-G45 infinite boot loop. Help appreciated.

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December 15, 2013 7:59:55 PM

My specs:
cpu: i7-3770K
mobo: MSI Z77A-G45
ram: 16GB corsair vengeance 1600mhz (2x8)
gpu: 2 x GTX 580 in SLI
psu: Corsair HX850W
Windows 7 Home premium edition
Nothing is overclocked

Hello everyone.

My system has started to boot loop. Everything had been working fine for about a year since I bought the PC. All of the sudden, when turned on, it would power up, fans spinning, but no signal to the monitor. They keyboard and mouse wouldn't light up either. After about 10 seconds it would shut down only to repeat this process 4 seconds later. This would continue until the power was cut manually by me. I then turned to this forum and google for help. I reset CMOS, rearranged the RAM - plus all the other advise I saw given - but nothing helped. After a couple of hours I went back and this time it powered up as usual.
I then instantly got a message saying "All settings were reset to default values. The previous overclock settings have failed, system has been restored to its default settings".
Weird, since I hadnt overclocked anything. (Dont even know how to). It then worked fine for about a week, everything being back to normal, but has now returned exacly like before where it will boot loop forever and I am lost for ideas.

I have seen many people across the internet having issues with this motherboard. Since it went back to working condition for a week I cant imagine that one of the components are broken, but rather that it is a BIOS related thing. But im nowhere near sure. I'm a novice when it comes to this level of PC'ing. :) 

So if anyone could help me with this issue I would be really thankful.

Thanks
December 15, 2013 8:06:13 PM

i would first try running at its bare minimum requirements. meaning remove both 580's, and a stick of ram and run it mobo, psu, cpu(with igpu), and a stick of ram and see if it still persists
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December 15, 2013 9:05:21 PM

I have just tried this out, and then with just one 580, and then back to two. Didnt change anything though.
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December 15, 2013 9:12:24 PM

remove the gpus entirely and run only using IGPU

edit: misread, tis a peculiar situation you have. part of me wants to say its most likely a cause of the motherboard based on the symptoms. have you recently updated anything?
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December 15, 2013 9:34:43 PM

From what I can gather my guess would be on the motherboard aswell. I just dont have an idea how to fix it. The only thing I have recently updated is my Nvidia drivers.
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