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Compaq Laptop won't boot

Posted on 2006-05-09
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Last Modified: 2012-06-22
My daughter's Compaq Presario 1700 laptop (model #17XL4) won't start.

It had been working fine on battery when she noticed the battery was getting low.  She plugged in the A/C power adaptor and the system immediately shut down.  The documentation with the laptop says this should not be done while the comp is turned on, and she forgot.  

Now, when attempting to power up, the hard drive starts to spiin, the screen shows a wash of backlighting, which I think indicates that it is getting power but no signal.  There is no post beeps and the fan doesn't start spinning.

Some other posts on this site say that if the fan doesn't start, then the laptop will not post.  Some others say that the fan only spins when needed.  I am not sure but suspect the motherboard, power supply regulator, CPU or memory may be fried, but don't know how to track down the problem.  I have checked the hard drive in another comp and it works fine.

Can you suggest where and how to look next?  Or, is this a deader?
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Question by:MarceusAurelious
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by:tim_qui
ID: 16640290
Remove the RAM modules, press the power button, does it beep?  No beeps with RAM removed usually means bad motherboard.

Have you tried running it with the battery removed and just on ac power?
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by:MarceusAurelious
ID: 16640494
Had already tried removing the ram and attempting a post to see if it would beep.  Same response.  I feared that the motherboard was bad.  Had also tried starting without the battery.  This didn't work either.  If the motherboard is bad, is the cost too great to warrant trying to repair it?  This laptop is about five years old.
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tim_qui earned 375 total points
ID: 16640556
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by:tim_qui
ID: 16640594
That deal that ends fast needs to have the power jack re-soldered to the mobo.  
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by:MarceusAurelious
ID: 16641108
Yes, it is a DIY.  I was too late for the first deal, but will monitor the site.  
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