Hi,
Im an IT pro, and i normally resolve this issue like this, first you may encounter that even if you change the memory stick from one socket to another it dosent seem to work, okay, force the M/B BIOS to enter into recovery mode, Press the four arrow keys at once, turn on the laptop (keys are pressed) and release after. If this dosent work move the memory chip to a different bank (ie slot) and try again. Don't swap them, work with one memory chip at the time. (Hard to believe that both chips are gone) but not impossible.
Basically you have a broken RAM memory chip. But not all cases are the same so put that in mind.
I hope it helps you guys.