my computer ( Dell intell inside Pentium 4 compuer) does not start


I have pentium 4 Dell computer with widows 2000 operating system. I got a problem with  my PC after I have done the following. I have bought an apparatus called Champion which is used for unlocking and repairing cellphones. I installed all softwares associated with the aparatus and  I connected the apparatus to the parallel port (LPT1) of my  PC.  But I made a mistake when I gave power to the aparatus. I gave high voltage AC and it  got burnt. (Short circuit is created and it became out of function). At the same time My PC became stuck. I restarted it but it couldn't start. I have measured the output of the power supply of the PC. the meter read nothing. I changed the fuse and when I measured it, it became ok. (12v and 5v dc), But still it couldn't start. what shall I  do  to correct the problem for my PC please?

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tmj883Connect With a Mentor Commented:
Most likely fried the mainboard. T
CallandorConnect With a Mentor Commented:
I agree, the motherboard is probably shot.  You can try stripping it down, in case it's just a bad PCI card: video card, one stick of RAM, cpu, and nothing else.
jemalhusAuthor Commented:
First thank you very much for your fast responce. I wanna Callandor's comment to be more clarify. Every PCI cards are imbeded with the mother board. How can I stripping it down and check?
If your system has everything onboard and no PCI cards, there's nothing more to check.  Otherwise, remove every PCI card, unless it's the video card.
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