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Notebooks & Personal Computers Notebook, Personal Computer - repair, disassemble guides, drivers, bios pasword, and problems with pc.

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Old 03-29-2017, 21:22   #1 (permalink)
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Laptop does not turn on

I have a laptop compaq cq71 which have the bellow problem

The laptop does not turn on, when i insert the dc jack its light turn on and after 30 sec it turn off,
After that the board seems dead, nother of leds is on

Can anybody give me any advice what part of board should i measure.
Can it be any foult of southbridge or northbridge?

Can it be any mofset problem.
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Old 03-30-2017, 15:12   #2 (permalink)
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1. Make sure your Charger / Battery isn't faulty.

2. Check the connection between Power Button and Motherboard.

3. Check Power Distribution on whole MB.
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Old 04-06-2017, 16:51   #3 (permalink)
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Have you check the battery or if you need to charge it already?
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Old 04-27-2017, 11:31   #4 (permalink)
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It can also be graphics card
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Old 05-22-2017, 20:10   #5 (permalink)
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Brother check 5 voltage and 3 voltage on primary section
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Old 05-22-2017, 20:30   #6 (permalink)
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buy new one my frd it looks like ur laptop is to old..this is the time to buy new laptop
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Old 06-22-2017, 19:15   #7 (permalink)
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The graphics chip could be damaged
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Old 08-24-2017, 19:33   #8 (permalink)
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Check BGA chip of VGA card? Rehot or Reflow chip.
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Old 12-20-2018, 15:30   #9 (permalink)
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Heat the graphic chip or chipset ...
If it helps, do reball this chip ;-)
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