Pc wont boot without cmos reset

[gonzer421]

Sometimes my pc won’t show display i have to reset cmos  for display after that it work flawlessly what could be the issue Twice a week i think

have check furmark stress test everything was ok no issue at all but sometimes it does not show display 

mouse n keyboard light up same with other gpu tried another old gpu for a week same thing happened 

 

specs 

i7 3930k

12 gb ddr3

500 watt psu 80 plus

x79 gigabyte up4 

rx 5500xt 

 

[Johnston]

perhaps your cmos battery is on its way out, it does seem to be a legacy machine so its not too unlikely 

[Beerzerker]

18 minutes ago, Johnston said:

perhaps your cmos battery is on its way out, it does seem to be a legacy machine so its not too unlikely 

Still possible, could be it's too weak to properly hold settings and it's requiring a reset to work.
I'd replace the battery anyway to hopefully solve the problem and avoid possible BIOS corruption.
If that ever happens, then you've got a REAL problem to deal with and a new battery is just too cheap not to, vs the trouble and expense of getting that fixed.

[gonzer421]

i have replaced a cmos battery today . checking it for a week if the problem continuous