PC won't start without a CMOS reset

[Adalawé]

Hi everybody.

 

I have the weirdest issue, since yesterday my PC is not booting. At all. I tried everything (swapped RAM, PSU, ...), nothing worked. The only solution i found was resetting the mobo CMOS using the handy button at the back. And... it works ! With a CMOS reset i can boot the computer, go to windows, etc... 

 

BUT ! 

 

When i reboot, the system don't boot unless i re-do a CMOS reset, which is really annoying ! 

Note by don't boot, i mean the mobo light up (the CPU LED), the fan are spinning ok, and after 10-15 seconds, it reboots. 

 

 

Any idea on how to solve this one ? 

 

Thanks all ! 

 

PS: Specs : 

 

Mobo : MSI Z77A-G45

CPU : i5 3570k

PSU : Corsair CX600 (brand new)

GPU : Gainward GTX 970 

RAM : 4*4

[shanmu54321]

Try changing the cmos battery.

[Adalawé]

Try changing the cmos battery.

 

Hi, 

 

Don't have a spare one right now, i'll try getting one soon. 

I don't think it's discharged tho, since it passes the 'lick test', a bit empiric but it definitely has power