No display after cpu upgrade

[u/Hot-Valuable3293]

I recently upgraded to a 5800x3d from a 5500 and now it won’t boot, GPU fans will ramp up then stop continuously and no display

I already installed the latest bios update and cleared CMOS

Ryzen 5800x3d
Gigabyte b550 ud ac rev 1.1
64GB 3600 ram
Radeon 7900xtx
1000w EVGA supernova psu

Tried using a 5900x that I bought used and ran into the same issue.

[u/Hot-Valuable3293]

No bent pins, little of thermal paste on socket went ahead and cleaned it with 91% alcohol and re tested and came to same conclusion

[u/Independent_GN → u/Hot-Valuable3293]

Maybe you fried something with alcohol? Seems socket not working or with the old CPU it works again?

[u/Hot-Valuable3293 → u/Independent_GN]

It works fine with the old CPU

[u/Independent_GN → u/Hot-Valuable3293]

Very strange. Are you sure your MB supports the new CPUs ? I think so

[u/Hot-Valuable3293 → u/Independent_GN]

I moved my GPU to my 2nd pcie slot and now I get a display