Hello and Happy Holidays,
I "obtained" this Dell laptop. It is quite old having XP as the OS. The model number has worn off so I only have the Service Tag number 5NSLL51 as an indication of the model.

When I got it, it would not power ON, no POST or disc spin up. After taking it totally apart, the CMOS battery was dead. First I removed the battery and installed a set of wires to externally power the BIOS. That did not work to bring the PC to life. I invested $5 for a M1220 battery that had only 2.7 volts on arrival but I did install it. Again re-assembling since the battery is on the underside of the MB, still nothing. I did the discharge with the battery out and still nothing. The Power and Charge LED's are lit.
My goal was to get this up and load Linux just for an educational endeavor.

If it is beyond repair so be it.

Regards,
Dan Kahn