Error in BIOS

[rookie]

Hello, I'll tell you what's happening to me, I'm modifying the values on the board and it modifies them, but when I restart it gives several beeps in a row, it starts up and the applied values are not maintained. I changed the battery on the board just in case, but nothing. Any suggestions?
Thanks
Motherboard: Gygabite EP43-UD3L
Micro: Core 2 duo E8400

[cobito]

Perhaps it has issues with the values you set and reverts to factory settings. Try leaving the stock values of all components and make small modifications to see if it saves them.