Hi Experts. I have a customer who has a Dell e510 and if you select: ( start > shutdown > turn off ) the pc will power off but the LED blinks yellow and you can't turn it on for 20+ minutes. It doesn't have any random power shutdows or any problem starting back up. So far, I have these with no success:
Updated the firmware
While the pc was off, unplugged the cord from the back and hit the power button
Tried different plug in the power strip
Tried different power cord (switched with monitor)
Removed all USB and serial devices from the pc and tried to boot up again
Like I said, when the pc is on, there are no problems. Any ideas??