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Computer motherboard is ESC PT800CE-A when i turn on no power in the mother board what is the problem and causes

Answers :

\015\012Thank you for your time.
\015\012I have a Sony Desktop VGC-RB42G. When I connect the power cord the GREED ligth on the power supply blinks fast, also there is a green LED on the MotherBoard wich also blinks fast.
\015\012Computer will not turn on!
\015\012Please help.
\015\012Thank you.
\015\012[email protected]
Try to replace your power supply.
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