[SOLVED] Only the 4th dimm slot on my motherboard works

[aPosast]

If I put a RAM stick in any other slot except the 4th one the cpu and dimm light on the debug lights up. Both sticks work in the 4th slot but neither work in the other 3. What could be the issue?

https://imgur.com/a/zSWsjjZ

View: https://imgur.com/gallery/zSWsjjZ

 

[lvt]

What MSI motherboard do you have and how you got it (brand-new, preowned)?

Are the two memory sticks of identical specs?

 

[aPosast]

What MSI motherboard do you have and how you got it (brand-new, preowned)?

Are the two memory sticks of identical specs?

I got the board from friend who put it in a case and never used it after. He was gonna build in it but decided to get a pre built instead. Both the ram sticks are Ddr4 2666mhz and the mobo is a MSI Z490 Gaming Edge wifi

 

[lvt]

I got the board from friend who put it in a case and never used it after. He was gonna build in it but decided to get a pre built instead. Both the ram sticks are Ddr4 2666mhz and the mobo is a MSI Z490 Gaming Edge wifi

You should try to clean the other 3 RAM slot to see if dust or corrosion is causing the bad contact.

Apply a bit of alcohol on a RAM stick's copper contacts and carefully insert/remove it a couple of time on each slot.

Let it dry for a while then insert a RAM stick to test each slot.

I know that it sounds a bit low tech but it's usually how we do without a RAM cleaning kit.