HP zd7260us Will Not Power Up

first off i just want to say thnx to those who read/respond. yes it is old and not worth the time but my 5yr old daughter uses it to for music and school work. so its worth it to her.

zd7260us will not power on. I have bought a new AC Charger & Battery just to eliminate them.

when the laptop is plugged into the charger (w/o battery) the ac light comes on (not the battery charge light!). when the power button is pressed the the power indicator light comes on for 1 second then goes off and the laptop does not boot. I hear no sounds of any kind during this process

when i install the battery and try the above i achieve the same results no matter if the charger is plugged in first or vice versa.

Configurations Attempted - all with no luck
1. tried 1 ram module at a time, different sockets, no modules
2. no hdd
3. no dvd writer
4. no wifi
5. disconnected touchpad
6. cpu removed

i also checked the resistance at the dc jack - all checked ok.

obviously i have taken a apart the lappy and found/seen no obvious visual problems. the DC jack looked to have good connections and was not loose in any way.

so if you think you have any ideas let me know?

 

I'm afraid your mobo has gone bad. (reads: nvidia video chip....). You could try baking the mobo. No, really. I'll explain if you want to.

 

Very interested in knowing more about what you mean by mobo. I also have a ZD7260us that is having very similar problems and would appreciate any help. Thanks.

 

Mobo = motherboard.

 

please take out the bios battery then let it stand for an hour. and better change it with a new battery

 

I highly doubt that it's nVidia. The zd7000 series came long before the nVidia problem, even far before mobile dual cores were found (though you could get a Clevo with an Athlon X2 if you wanted ). Motherboard problem of some sort, I'm sure it is. Definitely start with removing your BIOS battery for an hour or longer, though I guess it's worth the bake if it doesn't work anyways.