Second DIMM/RAM slot not working - HP Pavilion Gaming 15-cx - ...
Sudden Screen Flickering: If the RAM is not correctly working, it might be because of the poor contact between RAM and the slot.
MSI Z790 GAMING PLUS WIFI Motherboard, ATX ...
Customers have mixed experiences with the motherboard's slot capacity: while some appreciate the 4 RAM slots and 2 M.2 drive slots, others report issues with RAM slots not working and M.2 drives being defective.
Please help! Ram slots A1 A2 not working | Tom's Hardware Forum
Ram slots A1 and A2 not working, they worked before but then I took the PC apart and now they don't work anymore. The motherboard is MSI B250M Pro VDH
B1 and B2 works just fine, I can enter windows and go on the internet and everything.
I don't think there are any bent pins in the cpu slot...