Mac Pro unable to read RAM slots

Mac Pro unable to read RAM slots ram not detected in slot 2 I hear about this frequently The computer did not have RAM in the slot from the factory, and ramesses book slot demo hi guys, my friend told me his laptop come with 8GB of ram 2*4GB, everything run normally but then few days ago, his Dell G3 3590 only

ramesses book slot demo Ram stick 1 worked in slots 1 through 4, but the second i added another RAM stick in, it wouldnt same thing for ram stick 2 through 4 they

ram slot 1 and 3 I discovered that RAM Slot A2 does not work Both RAM Sticks work as I tested both of them in SLOT B2 So, at the moment I am only using one HOW TO SOLVE ONE RAM SLOT NOT WORKING PROBLEM Telegram Link : https:telegram