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HP m7000n series computer will not boot - no video, no sound, no keyboard

Posted on 2011-02-28
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Last Modified: 2012-05-11
HP computer stopped working.

No video on start up, no beeping errors(no sound), no lights on keyboard, no POST/BIOS/CMOS messages on start up. Unable to boot access CMOS/BIOS.

Do have power to fans, hard drive, CD/DVD drives doors will open and light to power switch and mouse.

Have tried with different monitor, video cable and keyboard. Have removed graphics card and connected to motherboard VGA adapter with no success.

What else can we try?
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Question by:PeterFuerte
9 Comments
 
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Assisted Solution

by:JeremySBrown
JeremySBrown earned 167 total points
ID: 35002003
Could be a bad motherboard. Do you have another for testing?
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Expert Comment

by:virtualxistance
ID: 35002105
Try pulling out the memory and see if you get any beep codes.
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Assisted Solution

by:edbedb
edbedb earned 167 total points
ID: 35002177
It might be the motherboard but it could just as well be the power supply.
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Author Comment

by:PeterFuerte
ID: 35002717
All,

No motherboard to change out. Will try switching power supply and removing memory.

Daniel
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Accepted Solution

by:
nobus earned 166 total points
ID: 35004874
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Author Comment

by:PeterFuerte
ID: 35019280
Nobus,

We had most of those but replaced the motherboard which we do not have. We are sending the machine to the repair shop for the final verdict which probably be a failed motherboard.

Peter,
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Expert Comment

by:nobus
ID: 35019454
that's what it is meant for - eliminating the rest !
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Author Closing Comment

by:PeterFuerte
ID: 35076039
Shop found two bad capacitors - no burn marks just slightly larger than the others.
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Expert Comment

by:nobus
ID: 35080209
tx for feedback !
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