[SOLVED] Computer keeps starting on bios

[Holografix]

my computer keeps starting on "press F12 for bios," regardless of setting my boot order.

specs:
Asus mobo: P8Z77-v
cpu: i5 3570k
gpu: gtx 1660
boot drive - sandisk ssd
i have a optical drive and a mechanical hard drive as well.

When it hits the "press f12 to reach Bios" screen, i set the boot order to my boot drive, save and reset and then it goes to windows. But when i start up by flipping the switch from the PSU, it still goes to the "hit f12 for bios setup."

anyone know a solution?

UPDATE:

The issue was indeed the CMOS battery. I replaced it, and now there's no problem.

Thank you all, for all your help and troubleshooting.

[emoticorpse]

If OP is reading, I'd like to ask how many times he's changed his CMOS battery over the years?

Opprinnelig skrevet av ☥ - CJ -:

When the PC isnt powered on the CMOS battery is used to keep the BIOS settings
So yes, when the PC is fully turned off/unplugged the battery has to be used.

Likely why my battery still works because my PC is practically never turned off.

So anytime the power is flowing through the PSU it's almost like the CMOS battery gets to rest/take it easy because it doesn't need to use it's power? Even when the PC is off but psu is plugged in?

That would make sense why I rarely see CMOS batteries go out, because I almost never turn disconnect it from the wall unless like working on it or something.

[[☥] - CJ -]

Correct
As long as the motherboard is getting power by the PSU the CMOS Battery shouldnt be being used

But removing that power, either by flipping the PSU switch or unplugging the PSU the board will have to rely on the CMOS battery.

[GOD RAYS ON ULTRA™]

Yeah, your cmos battery or your cmos jumper could be set wrong also. If the jumper is left on the wrong pins by mistake. I've done this before where I accidentally left the cmos jumper on the reset pins and the pc kept booting to the bios.

[Holografix]

Opprinnelig skrevet av emoticorpse:

If OP is reading, I'd like to ask how many times he's changed his CMOS battery over the years?

once in 12 years. and i changed it on like year 10 of use, and i always turn the PSU off at night.

[emoticorpse]

Opprinnelig skrevet av Holografix:

Opprinnelig skrevet av emoticorpse:

If OP is reading, I'd like to ask how many times he's changed his CMOS battery over the years?

once in 12 years. and i changed it on like year 10 of use, and i always turn the PSU off at night.

Where did you get the second battery?

[Holografix]

Opprinnelig skrevet av emoticorpse:

Opprinnelig skrevet av Holografix:

once in 12 years. and i changed it on like year 10 of use, and i always turn the PSU off at night.

Where did you get the second battery?

the store.

[[☥] - CJ -]

Any decent brand battery will do, they tend to last 5+ years, obviously depending on how often the PC is fully turned off.

[Holografix]

UPDATE:

The issue was indeed the CMOS battery. I replaced it, and now there's no problem.

Thank you all, for all your help and troubleshooting.

[[☥] - CJ -]

Np, glad it was easy to fix :)

[_I_]

the cmos battery will last much longer if you never turn off or unplug the psu or use the psu power switch, and only use the case/mobo switch to soft turn on the pc

[Holografix]

Opprinnelig skrevet av _I_:

the cmos battery will last much longer if you never turn off or unplug the psu or use the psu power switch, and only use the case/mobo switch to soft turn on the pc

in my case, if i don't shut down the psu switch, the computer will suddenly turn on randomly. might be in an hour, might be in 2.

[_I_]

check windows sleep timers, and usb devices

and in bios
disable all the wake timers/devices

if that fails, unplug the power switch header, to make sure its not a broken switch

[Holografix]

Opprinnelig skrevet av _I_:

check windows sleep timers, and usb devices

and in bios
disable all the wake timers/devices

if that fails, unplug the power switch header, to make sure its not a broken switch

ok, ill check those out. wow, you were the 1st commenter and you figured out the CMOS thing, and now you're probably going to figure out why my computer self-starts. amazing.

[_I_]

and in bios, turn off the resume on power restore, or similar option
if turning on the power switch boots the pc, could be brown out turning it back on

[Bad 💀 Motha]

In the BIOS look for an option regarding:
Power Off/Loss State

Options being:
> Stay Off
> Restore Power

Select the Stay Off option.

Disable all Wake Up and Wake On LAN options in the BIOS as well.

BIOS and also apps such as HWMonitor WinOS app from CPUID should show a voltage for 3.3V ~ This should be your CMOS Battery. If this at any time falls below 3.0-3.1V go ahead and replace it; as approx 2.9x Volts won't be enough.