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Laptop motherboard Testing

I replaced a motherboard in a dv7 2 yrs ago. Now its back with another suspect motherboard issue.
Is there a good usb tester for laptop motherboards.

This one powers up, hear the fan spin, and cd spin. No video and hdd dose not spin .

dbrunton

Remove hard disk and place a bootable CD in the laptop and see what happens. No video at all like this then the motherboard is quite possibly dead.

Connect the hard disk to another computer and see if it works there.

nobus

here my laptop troubleshooting guide, i hope it helps you :
- remove all external devices
- if no display - test with an external monitor
- test if it runs from battery alone, or from AC alone
- test also with a known good battery !
***some laptops have a reset button - if you have one use it!
- remove battery and AC adaptor, hold power button for 20 sec, connect AC and reboot --> any display ? if NO -->
- disconnect all disk and cd drives, battery , and other cards and peripherals, leave only 1 ram stick
- boot -->any display ?
-if you can access the bios battery, remove the battery, AC, and bios battery for a minute to reset the bios
or test it, it should read 3 V
*** you can test the disk on another pc, if you like !

===>>you can test if the mobo works outside the casing, connected to power and external video !

you can also remove and reseat the video plug - it sometimes comes loose

Richardlammer

ASKER

These are great answers. I guess I should be more precise. I stull use a post card to test desktops but cant seem to find one that will work on a laptop. Any ideas

SOLUTION

dbrunton

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ASKER CERTIFIED SOLUTION

nobus

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