Are you using a video card? If so, hook up one monitor to onboard video and see if that gets you to bios
I messed up. In an attempt to get my computer settings compatible with Windows 11, I changed the Boot from Legacy to UEFI and changed the Boot Security. Now the computer powers up, but nothing ever shows on the monitor (black screen) and F2/F12 do nothing. How can I get back into the BIOS to change these settings back? Help!
XPS 8700, Windows 10, issues after changing from Legacy to UEFI