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Dell laptop Inspiron would light up.

By Eyetech ·
When I turn it ON, the ON light and the hard drive lights come on for about 3 seconds and then everything shuts off.
It was drop at one time. I have had it all apart and looked over the whole mother board with a magnifing glass for cracks, encluding all connectors but found nothing. Replaced the hard drive but nothing helps.
I can hear the hard drive spin but the screen doesn't light up. The memory and all connections are tight.
Can someone give me a clue what might help. I work on PCs for a large compnany but this has me snowed.

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Dell laptop Inspiron would light up.

by donmars In reply to Dell laptop Inspiron woul ...

Did this all start after it was dropped or did it work at any time after it was dropped? The symptoms appear to be power related. do you get the same results with AC power as well as battery power? does the drive continue to spin even after it appears dead? did you check the fidelity of the battery connection? There is a total lack of power after its initial "ON" correct? If not, did you connect it to a separate monitor to rule out a display problem? what if you try to boot off a boot disk? Do you get the initial POST screen? Can you get to the setup screen? was there any external damage from the fall? This is a tough one to troubleshoot based on the information you offer. You will need to apply logical troubleshooting steps ruling out areas as you go along and concentrate on a power supply prob for now til you can rule that out. You may want to grab the DVM and do continuity checks relative to power supply connections to points in the computer first then check voltages at points on the motherboard just to know you are getting juice to the components (with the battery installed and no AC attached) In other words the power supply seems to be shutting down after that initial burst.

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