Power surge mac mini power light comes on but no video

after a power surge my mac mini 2010 2.63 ghz intel duel core processor 8mb ram 320GB onboard hard drive 2 2T external hard drives powering 2 21inch monitors.
power light comes on but no video

"Failure to chime" is not one problem.
¿ Is the power light flashing? This indicates not enough working RAM to Chime and Start up.
Without the Chime, you get nowhere. The conventional way to debug this situation is to remove everything that could be drawing too much power and build back up from there.
Remove AC power.
Press the power-on button and hold for a quarter minute. (This does an SMC Reset.)
remove all drives,
remove all but one unit (a pair on older Mac Pros) of RAM
Remove the graphics card, and all PCIe cards.
Restore AC power, wait a quarter minute, then power on.
¿Chime?
--Yes, add the graphics card only and proceed to debug.
--No. if the fans are spinning, check the Voltages at a power connector such as a DVD drive connection.

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