Help - Cannot charge thinkpad

[tiger1]

I have a thinkpad R31 which has been working fine for many years until recently where I encountered the following problems:-

1) AC Adapter plugged in with battery removed cannot boot-up. Have checked AC adapter with multimeter works fine.
2) AC Adapter with battery in will boot up and run a little while with beeping sound coming on and the notebook simply just go blank and shutdown.

I can figure out what the problems is definitely not software, not AC adaptor and not battery.

Please help

Thanks

[IBM Thinkpad]

I have a thinkpad R31 which has been working fine for many years until recently where I encountered the following problems:-

1) AC Adapter plugged in with battery removed cannot boot-up. Have checked AC adapter with multimeter works fine.
2) AC Adapter with battery in will boot up and run a little while with beeping sound coming on and the notebook simply just go blank and shutdown.

I can figure out what the problems is definitely not software, not AC adaptor and not battery.

Please help

Thanks

Change your AC adapter and battery. Maybe motherboard problem. Phone IBM and ask them why?