How many consecutive flashes does it show? System Diagnostic Lights  Also, can you perform a CMOC reset as per these instructions: Clear CMOS 
Hello, I recently updated the BIOS on my Aurora R9. Dell classified these three BIOS updates as URGENT.  So, I installed all three. Now, when I try to turn my computer on, the Alien Head flashed Yellow and nothing else happens. No sounds. No display on the screen. No power up to Windows. The Aurora R9 stays on with this yellow flashing Alien Head. Please help. Please advise.\
Aurora R9, Flashing Yellow Alien Head