if you don't lift your hands up does it keep going?
You might find the top panel might sag in a bit too much after a fews years of use and you did say it was a pentium 166 with 32 Megabytes of memory. Some age there. they can sag. Make sure the surface the lappy sits on is flat as . I think i remember the 1 u have . it's a bit of a block, so maybe not sag. pull the top off, the is a way. it is the way in. u can lift the keyboard up after u remove the surround. might have to remove some screws.
The only 1ns u will have to remove on the bottom will probably have arrows next to the holes.
Just check the condition of the keyboard and the ribbon cable attached to it. Blow it all out.