Computer will not boot off any bootable disk or startup

Hi,

  My computer will not boot off any bootable disk or even startup.  I was in the middle of reinstalling Windows XP, when some how the computer shut off and now it will not boot up.  It boots the pre OS boot screen, where i can select to go into the BIOS or boot from a disk.  From there i select to boot from a disk and then nothing happens.  The hard drive, cd, power supply, and CPU fan are all working correctly.  i dont here any beeps, except one when the computer first boots up.  The monitor settings are also correct and all cables look good.  Any suggestions would be much appreciated!!!

Thank you.
sealya7Asked:
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sealya7Author Commented:
No, turns out the monitor boots up in Analog mode and then goes into Digital when the OS comes up, etc.  Since there was no OS installed and the first OS got corrupt, disconnected because of the power supply failure, the monitor wasnt coming up after the post boot screen.
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PUNKYCommented:
Try to reset bios and setup to boot from CD/DVD, and try installation again.
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sealya7Author Commented:
yes, i already tried that.

thanks.
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nobusbiljart fanCommented:
you can try to boot from the cd with all other disks disconnected
you can test cd and disk drives on another pc
check also for bad caps :  www.badcaps.net
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burrcmCommented:
Unplug it and pull the mobo battery. Wait 30 minutes. Replace the battery and plug in. How now?

Chris B
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sealya7Author Commented:
the computer wouldnt boot at all, soi tested another power supply and now the computer will startup. but, i still cant get it to boot to a cd.  so, i exchanged the fan for a new one and now it will startup again.  The reason i was reinstalling the OS is because the computer got some kind of virus that i could not find to delete, it seems to be hidden and when i went into safe mode the virus wasnt there.  Since the hard drive had nothing on it besides the basics, i decided to reinstall.  this is when the computer stopped running in the middle of the install, due to the fan.  Which is a little odd because i just rebuilt the computer with a new hard drive, mobo, video card, power supply, cpu, and dvd/cd rw.  I havent tried to pull the mobo battery, should i still try?  Thank you!!!
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nobusbiljart fanCommented:
then i would return the mobo asap...
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burrcmCommented:
Faulty mobm is a definite possibility. I would try removing mobo battery to ensure bios settings are at usable defaults.

Chris B
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sealya7Author Commented:
hmm, that's too bad if it's the motherboard... we tried reseating the mobo battery and now it starts up, but wheni try to boot from disk nothing happens. im going to try a 3rd disk and if that doesnt work, something else must be wrong. everything appears to be connected correctly and i operating.   im stumped, i know the disk is bootable.
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nobusbiljart fanCommented:
can you boot from floppy, or cd?
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sealya7Author Commented:
I have only tried a cd, 3 different ones that i know are bootable.  I can hook up a floppy drive and try that, if you think i should.  Once i select "boot from cd"  the cd spins and nothing happens, i dont even get the "press any key to boot from cd".  could the motherboard be bad?  Its an ECS.  maybe its the CPU, i have and Intel Duo.

Thanks for all your help!!
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nobusbiljart fanCommented:
check for bad caps  :   www.badcaps.net
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sealya7Author Commented:
i tried a different monitor and whata ya know...it works.  so, im not sure if its the old monitor or dvi cable.  I find it odd that it would show the post boot screen and go blank once i tried to boot from disk.  very odd....
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nobusbiljart fanCommented:
bad contact in the cable?
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