HP DV2500 Suprisingly BOOT

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UrTechSavee

Honorable
Oct 30, 2013
4
0
10,510
Greetings to you all.

I have a friend of mine has HP DV2500 special edition which don't power on.

already test the following steps.

1. Power Adapter is tested OK.
2. Power Jack is tested OK.
3. Battery still charge when power adapter plugged. OK
3. 4GB memory tested OK.
4. Hard disk tested OK.
5. CPU FAN working OK and already clean heatsink. OK
6. No detected over heating CPU nor GPU. OK
7. No error on GPU when it was still working. OK
8. Already tested DVDdrive,Sound,USB ports,VGA out OK when it was still working. OK
9. Removing Battery/Adapter and do the hard reset pressing Power Button for 60 sec. then use the Power Adapter w/o battery.
-It work at first and it boot but when I shutdown it, it won't power on again. Failed.
10.Removing the CMOS battery then doing the step 9 then putting back the CMOS battery. Failed.
11.Removing RAM, DVDdrive, HDD and do the step 9. Failed

Note:
-not a dead motherboard because it still surprise you it when you press the power button and it boots.
-downside is when I turning/shut it off. it won't power on again for days or weeks even doing those steps.

still planning to bake the motherboard if there is no more way to boot it normal.

Is there any way to fix this laptop? not to bake it for last resort?
 
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U

UrTechSavee

Honorable
Oct 30, 2013
4
0
10,510


Thanks for the reply Nitro192, and yes the power button is perfectly working because it surprise me when i press the power button and it boots for a while, the downside is it won't boot/power on again if i turn it off or shut it off. it will take some days to boot again and those steps won't work and the power button again won't work and stays dead for days.
 
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U

UrTechSavee

Honorable
Oct 30, 2013
4
0
10,510
ok..so i made some test today, i remove dvd drive, RAM, HDD, WLAN card, battery. still unplug and doing the hard reset, plug the power adapter and press the power button and it boots again and it beeps that RAM is missing, powering off, remove the power adapter, put back first 2GB RAM into white RAM slot, plug the power adapter, pressing the power button and it boots again, pressing F10 to BIOS and do some memory test and it pass. and now trying to close the LID for few seconds and open the LID and suddenly the screen won't display, all indicator lights still on but it freeze/hang, prolong the power button to off but failed..trying to remove the power adapter to off the system for few seconds and putting back again the power adapter and again it won't power on.

note: a different way to power on but not the power button but the quick play sensor button which is next to power button, the play icon and the DVD icon which also trigger to boot the system. is this possible? because it works when I test it.
 
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U

UrTechSavee

Honorable
Oct 30, 2013
4
0
10,510
ok guys I just found out the cause of the problem of this laptop why won't power on often, the owner of this laptop said it was never been used for 3 years because of the problem. actually it was the LID ACTUATOR SWITCH causing the unstable/conflict to not powering up properly the system. So I decided to disable it by unplugging cord/adapter that connects to motherboard and the monitor. And so it works! just like normal power button do. Still doing some test like removing battery and used the power adapter, then battery without the power adapter and so on removing each HDD, RAM, WLAN if it will cause the same problem but it's not and its now in working condition. and just resurrected from 3 years of sleep.
 
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