Alternate suggestion: chill the whole computer (put it in a zip lock back
and put it in your refrigerator over-night, take it out the next morning
and allow it to warm to room temperature before opening the bag [to prevent
water condensation]). This may allow you to 'reset' the computer more
rapidly.

pretty method, i will consider it maybe...
but the 'nine proof' for bad connection can be when it powers up try to hit a bit it around,
try to stress it to find bad connect. or bad soldered BGA chips..
let us know.. after that open the freezer and let it make frendship with chickens or fishes...