Laptop (A1370) has white screen of death

The laptop (A1370) starts with white screen.

The laptop sat unused for 4-6 years. It won’t start up now.

I am not a work bench techno wonder so my descriptive terms may be obsolete or wrong.

A board I can replace, but soldering a capacitor replacement is a bit beyond me.

After searching the web and iFixit for white screen fixes… I have tried all keystroke fixes, the laptop’s recovery flash drive, and DiskWarrior… nothing solves the problem.

I am thinking that the capacitor that holds the start up info (bios) has expired/drained.

It has been suggested that a new SSD or logic board could solve the problem.

I don’t think replacing the SSD would be a big problem, but which board would I need to replace to solve the dead start-up capacitor problem?

And… Would it solve the problem?

Thanks - hadd-edli