Dell Inspiron N4010

I am working on a Dell Inspiron N4010. It is getting no power at all. This computer came in with this issue. I removed the hard drive and tested it. The hard drive is great. I thought maybe it was the DC jack so I replaced it and it still has no power. I have tested the power adapter on another computer so I know it is working properly. Does anyone have any ideas about what could be causing this issue.
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nobusConnect With a Mentor Commented:
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 NO remove all ram and reboot --> if NO beeps, mobo or cpu bad ; if it beeps, replace ram stick
-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 !
The motherboard may be damaged/burnt out.
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