However, contact corrosion is common with RAM.
I suggest you remove and re-seat each RAM stick 4 or 5 times
to burnish the contacts. -
_I had this trouble around Christmas in a T3500 and
did this with _Just the one DIMM slot that "Fail"
also did it 6 times
- then said well One more won't hurt and did one more
and that Fixed it _thanks_``~...