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Computer dosent turn on..screen is blank with blinking LED

Hello, i recently was testing a voltage regulator power supply i had built with software running on my computer throught the parallel port. The software tests if the LEDs on my power supply would light up according to the voltages (12v,3v,5v,..) I was moving the board around because some seemed to be lighting while i was doing it. Then a big spark came out of the curcuit board and my computer breifly stoped ( no power, no screen, no nothing) for about 5 seconds. It then came back on how it was originaly. When i tried typing the keyboard didnt work but the mouse did. So i rebooted the computer pressing the reset button. When i try to turn on the computer the power button dosent work only the reset button works. It only comes on when i switch the power switch at the back and the screen turns on but its just black with a blinking light like its on standby.
I tryed to give as much info as possible
Please Help Me!!

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Have u tryed
unplug all of your plugs at the back like blow on them like i do to get lil partcals of dust out then plug all back in and mite work or maybee ur power cord is screwed a bit and u mite have to get a new one whats happednd to ur comp happend exactly the same with mine and i screwed with myn for ages and it finaly worked so maybee just try all that n then if that dosent work as drliativ hes a good guy and will help

hes helped me out a few times hes a great guy

Posted on Dec 02, 2008

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