one of my ram slots is not working - 7 cách khắc phục lỗi "không nhận thẻ sim" trên điện thoại ... download 888 slot

Hi my Lenovo tablet is not picking up my sim so I thing it my sim slot that is not working but how can I fix it with going to anybcell phone shop plz help me to fix it fast.

S O my motherboard has 4 ram slots and now only 1 of them seems to be working, something only comes up on my monitor if I put one ram stick into the working slot, if i put another ram stick into another of the slots, nothing comes up on the monitor Putting in one ram stick into any other slot...

Why is my RAM slot not working? Your RAM slot may not be working because of an incompatible RAM, a broken slot, bent pins in the slot, a faulty motherboard