Try a CMOS reset as per this procedure: R8 CMOS reset 
Hi, Never had an issue with PC until this morning. There was an update and Dell Recovery install this morning, did a restart after that, now PC is a brick. The PC is incredibly quiet (wish it was almost this quiet before ...) but nothing. All the fans work, but seems like the BIOS is nothing kicking in. 2.5 years PC is now a brick. Sent an email this morning. Anyone else had a similar issue with new Dell Recovery install or update to drivers/BIOS this morning ?
Aurora R8, bricked after this morning update