I love acetone
We used it to break down epoxy when we epoxied PCBs to clamshells and the units came back for RMA (or failed QC).
Squirt in some acetone... wiggle and lift.. more acetone wiggle and lift. third application will completely dissolve a 1"x3" patch of epoxy

Turns epoxy into rubber cement
I use it on my mobos for cleaning

but not everywhere of course. Only the socket and DIMMs (probably the PCIE slots too if I ever chilled a GPU which I have not yet)