Update = After completing troubleshooting, a DELL-Cares agent setup a part replacement.
Hi This is the second new Optiplex 7000 not booting.  Brand new Optiplex 7000. Came up the first time. Worked for several minutes. On PC restart automatically started updating flash BIOS. PC was left running to finish off BIOS updated. A few minutes later when pc was inspected it was off and there is a power light pattern on it; 3 amber flashes, short pause, 6 white flashes then long pause.  The pc would not boot now. Very disappointing that a brand new pc has gone down like this. Please treat it as priority as there is down time for the company with the second Optiplex 7000 down. Thanks Regards  
New Optiplex 7000 not booting