When starting, this laptop (ibm thinkpad 600) gave an error: 00192… but just wouldn’t start windows (win 9 8 ) or dos

I could then go to a bios diagnostics area, but a test of the main board just gave more cryptic errors.

An internet search returned the following site: http://www.sharkyforums.com/archive/index.php/t-201688.html

It had the perfect solution. It was a flat CMOS battery.

Replacing the battery ended up being amazingly simple.

I had a spare 3V lithium battery (from another mobo). So I easily removed the flat battery, attached the wires to the new battery (I tried to solder the wires to the battery, but the solder wouldn’t “stick”.

So I tried plan B: packing tape. By pulling the tape as I wrapped it around the battery & wires, the tape stretched and acted like an elastic… forcing the wire contacts to remain in touch with the battery terminals.

Plan B worked… The laptop finally started. Problem fixed.