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Raikka_

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HP laptop, no power?

Hello.

So, HP laptop is nomore power up, front side power LED is quickly on and then off. No power even when battery is off.

Is there any suggestion what is wrong?
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Raikka_

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Removed and reinstall memory, now power up but shuts down in 1sec...

Front lights (power yellow) is ok.
Hi,
I think one of the laptop's memory is faulty. If you have two chips remove one in time and try to power the laptop, also change them between the slots.
Remove Batteries  and Try to start without battries
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nobus
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>here my laptop troubleshooting guide :
>- remove battery and AC adaptor, hold power button for 20 sec, connect AC and reboot --> any >display
>? if NO -->

OK, no display and no beeps

>- disconnect all disk and cd drives, battery , and other cards and peripherals, leave only 1 ram stick
>- boot -->any display ?

No display, no beep

>- if NO remove all ram and reboot --> if NO beeps, mobo or cpu bad ; if it beeps, replace ram stick

RAM, battery and hd is removed, no beeps....

So there is motherboard dead??

Thanks a lot....
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ASKER

... is there any manual how change motherboard to hp 6715b laptop??

Thanks
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ASKER

OK, thanks a lot.

Now motherboard is checked, and it is broken, see pictures. Now how I know is processor broken also?


P1030142-ok3.jpg
P1030140-ok2.jpg
P1030127-ok.jpg
the only way to test a cpu is on another working motherboard