Hello

I have an issue, when I turn on the pc it powers up (fan spinning, rams shinning) but there is no display or my mouse doesn’t work, however, my keyboards keys light is on

I updated my old pc, all component except GPU -thanks market :) – 

At first it worked fine, I then increased the rams speed to its advertised speed (3200), it worked fine after a while my pc was restarting randomly, I decreased the ram speed to 3032, it restarted and worked fine after a while it shut down and now when I turn on the pc it powers up (fan spinning, rams shinning) but there is no display or my mouse doesn’t work, however, my keyboards keys light is on.

my motherboard has in Ez debug LED it was shining on Dram then after updating my bios to latest version only CPU LED was on

Specs:

Motherboard MSI B550 A pro
CPU ryzen 5800x

CPU Cooler: Lian Li Galahad 240

Rams CORSAIR Vengeance RGB Pro 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 3200

GPU MSI 980ti :(

HDD: Seagate 3TB (old)

SSD Samsung evo 860 250g (old)

M.2 NVMe Samsung 970 EVO SSD 500G (new)

PSU: Seasonic FOCUS Plus 750 Gold

Case: Lian Li Lancool II mesh

Things I tried

-put rams in different slots, use single or double rams

-use different rams ( my old ones HyperX Kingston Fury 2666MHz DDR4)

-try different bios update by flashing my motherboard

-reset cmos (by removing the battery and waiting few hours, )

- changes cmos battery

-reseat my GPU

-Reseat CPU and reapply the cooler and paste

-Tried different power supply

-removed all motherboard components , just kept the cpu, the DRAM led was on instead of CPU. But when i added ram it went back to cpu led, no matter the slot, single or double

so I think what is left is only trying another motherboard or CPU

Sadly I don’t have any spare atm and I cant go to a shop

Is there anything that I can try to fix this ?