What is the "static trick"?

If what we call the 'generic reset' doesn't work (remove battery disconnect charget, keep power button pressed for 60 seconds, insert battery and connect charger) doesn't work, other things to try are:
- new original Dell battery
- new original Dell charger
- new original Dell PSU
- new original Dell motherboard
Seems like it needs an original Dell tech to try all of these.

Kees