[SOLVED] Upgraded from 3700x to 5600x - now no POST. [SOLVED]

[ctkao2112]

Computer specs
MOBO: MSI Tomahawk B550
CPU: Ryzen 5 5600x
GPU: NVIDIA 3070
RAM: Trident Neo 16 GB
Storage: Samsung 970 EVO
Cooler: Dark Rock 4

Ok, so here's the situation. I just upgraded my CPU from a 3700x to a 5600x. The 3700x ran perfectly fine, but when switching to the 5600x, I get the following symptoms:

• No POST
• EZ diag CPU LED on the MOBO is red
• All lights and fans are on

I have tried the following:

• Updating BIOS
• Resetting CMOS

I can say with a high degree of confidence that everything else in the computer is fine because I can switch back to the 3700x and the computer starts up normally. This eliminates most of the potential troubleshooting suggestions that I've found (stick of RAM not plugged in etc).

I should also add that I very slightly bent the 5600x pins when taking off the cooler - I was checking to make sure the thermal paste was applied correctly the first time I put the cooler on and the CPU got stuck to the cooler - but the pins seem to slide into the holes just fine anyway. Could this still be the issue?

I should also mention that I bought this from ANTOnline, a less than reputable website (hard to find this CPU, what can I say). Is it possible/likely they sent me a bad chip?

 

[CountMike]

Computer specs
MOBO: MSI Tomahawk B550
CPU: Ryzen 5 5600x
GPU: NVIDIA 3070
RAM: Trident Neo 16 GB
Storage: Samsung 970 EVO
Cooler: Dark Rock 4

Ok, so here's the situation. I just upgraded my CPU from a 3700x to a 5600x. The 3700x ran perfectly fine, but when switching to the 5600x, I get the following symptoms:

• No POST
• EZ diag CPU LED on the MOBO is red
• All lights and fans are on

I have tried the following:

• Updating BIOS
• Resetting CMOS

I can say with a high degree of confidence that everything else in the computer is fine because I can switch back to the 3700x and the computer starts up normally. This eliminates most of the potential troubleshooting suggestions that I've found (stick of RAM not plugged in etc).

I should also add that I very slightly bent the 5600x pins when taking off the cooler - I was checking to make sure the thermal paste was applied correctly the first time I put the cooler on and the CPU got stuck to the cooler - but the pins seem to slide into the holes just fine anyway. Could this still be the issue?

I should also mention that I bought this from ANTOnline, a less than reputable website (hard to find this CPU, what can I say). Is it possible/likely they sent me a bad chip?

What about BIOS version. Did you update it to last one ?

 

[ctkao2112]

What about BIOS version. Did you update it to last one ?

Yes, I tried that.

 

[Deleted member 2856582]

How did you update BIOS? Did you try different methods?

 

[ctkao2112]

Turns out it was bent pins. All is good now.