My pc bios keeps resetting every time i start up?

Question

Every time i turn on my pc i get this hardware detection page which says

Date/time settings reset
Harddrive/ dvd drive detected

Press f12 to go to config menu or something

and i have to press f12 every time and exit. I was thinking if the cable between my hardware and motherboard has got fault or if it is my hard drive because i keep getting this all the time and also have to set the the date every time too, would like to know where the problem could be?

Answer 1

Replace the backup battery on your motherboard!!!

The backup battery retains your Bios settings when the PC is off. When the battery is no good, your Bios settings are not kept in storage. Most PC motherboard batteries are: CR2032.

Answer 2

Sounds like the CMOS battery on the motherboard has gone flat- this usually maintains a constant power supply for the BIOS clock and other settings when the PC is powered off. It is a coin sized CR2032 3V battery that most stores that sell a good selection of batteries will stock, replacing it is fairly straightforward- power off the PC, open the case and locate the coin-type battery on the motherboard (it is conspicuous and easy to find) replace it with a new battery (make sure the polarity is correct), start the PC, you'll need to go through BIOS set up again to set the time and date, when you have done that, press the F10 key to save the changes and exit. This should do the trick

Answer 3

It could be that you have customised the BIOS settings in some way and the settings are unstable so everytime you reboot the BIOS wants to return to default settings. Have you overclocked cpu or changed memory timings, or settings, changed any voltages or any other information in BIOS? Have you tried replacing the CMOS battery [as you say the clock keep going out]??



You give no make or model of your motherboard, no details on the make of BIOS or what version you are using, so it is difficult to give more focused advice.

Answer 4

Well, if you haven't set the settings in a long time, or haven't used it in general, it happens to do that. Just skip the option by pressing either esc or what ever button lets you skip (if you can).

Answer 5

Your CMOS battery is dead and needs to be replaced.