How can we recover bios settings if my desktop automatically shut down after 15

rishi_12

Honorable
Dec 19, 2012
1
0
10,510
:hello: whenever i m opening my pc it shutdown after 15 seconds. It is showing an option to recover the BIOS settings but unable to open. Neither DEL key is working nor F8 is opening BIOS setting. I have changed CMOS battery but it is not working. It automatically started after 15 seconds. :??: