I can't enter BIOS

[SirLipe]

On the screen as always it shows that I can press Del or F11, I've tried both but they don't work! They worked before.

Motherboard: MSi H81M-P33

Update: Yes I am on windows 10

 

[notlim981]

Usually the keys used to enter bios are either DEL or F2, F11 being used for the boot menu. Try F2, if it does not work, the only feasible option I see is to reset the bios, either through the motherboard jumper or by removing the CMOS battery and putting it back on the motherboard.

 

[unreal9400]

Are you using Windows 10?
Go to Settings>System>Update&Security>Recovery>Advanced Startup>Restart now