My computer resetting all of the bios setting after power outage.

[pard976]

If i shutdown my pc and after shutting down i dont remove it at the power outlet, and when i turn on, my pc keeps/save the bios settings. but when my computer is shutdown and i unplug it at the power outlet. and after a while the PC doesnt have a power, when i turn on it the bios settings reset.

1.i try to buy new cmos
2.i try to put my stable cmos from my old bios
3.i try to change my bios chip. but my motherboard doesnt have.

 

[Dunlop0078]

The CMOS battery on the motherboard is likely dead.

 

[warpcrash]

CMOS BATTERY

 

[pard976]

is it died or undetected?

 

[Dunlop0078]

It likely died. The CMOS battery provides power to the memory that stores your BIOS settings, that memory is volatile so everything in it is deleted when there is no power to it. If the battery is dead and you unplug your computer from power all BIOS settings will be deleted.

 

[pard976]

i change my cmos i put a working cmos in my old pc and when i boot its reset and its say cmos checksum bad

 

[trampus123]

MERGED QUESTION
Question from pard976 : "bios resetting in boot."

i have a problem my cmos resetting after power outage and turning on. that is my last problem so i buy a cmos and its resetting again after power outage.

we need more info on the system is it a DIY or a dell HP what not