Bios issue? Computer wont bootup without messing about

[HaloUK]

Hi All, got my dads pc at home its got an Asus P8Z77-I Deluxe motherboard.

When I go to boot up the PC it keeps saying...

Please enter setup to recover BIOS setting.
Press F1 to run SETUP

Now all I need to do is hit F1, go into the advanced mode, click on exit and then and hit save changers & reset. The PC then boots up fine. If I then just reset the PC when its in Windows the PC booted up fine.

It's doing my head in... any ideas what I need to do to just get the damn thing to boot up to the login screen when turning the PC on?

 

[HaloUK]

Hi Will, yes BIOS is latest. Think I reset CMOS. Will try again. Dad turns off the power to the socket connected to the PC. Am wondering if the motherboard battery has run down/flat. Would this cause this issue?

 

[HaloUK]

Thanks very much guys. Input much appreciated. I will purchase a new battery and see if the problem still shows.