Why does my pc keeps booting into bios repeatedly

I was setting some settings with admins and I set the admin permission to myself " Romi " and then I shut down my pc from that point onwards there was this error " blue screen of death " "0xc000021a" and to fix this i tried many fixes but now my pc is stuck at bios and everytime I power it , the bios keeps popping up .

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0