How Can I Remove a Stuck CPU Cooler from My AM4 Processor?

It sounds like you’ve already tried a lot. Just to confirm, have you made sure all the screws are removed? You might be surprised by how much added pressure you need to apply while twisting if the screws are still in place. If things are really stuck, a gentle tap with a tool against the cooler might loosen it up, but be super careful not to apply too much force.

You might want to reconsider your approach by heating the cooler; sometimes soaking it in something like WD-40 overnight can help too. Just be cautious, as you’ll need to thoroughly clean the CPU afterward to avoid damage. If the cooler really refuses to budge, you might need to get very creative—like building a temporary setup with your new motherboard.

One unconventional method could involve placing the cooler and CPU in the oven at a low temperature for a bit. You have to be super careful with this strategy, especially with an AIO cooler. Just remember to wear gloves afterward because it gets hot!

Twisting the cooler back and forth while applying a bit of heat usually works well for stuck coolers, but don’t just yank it off. Make sure you’re only pulling straight up. If you can’t shift it, consider using a 3D-printed wrench that fits snugly around it to get more leverage. The extra torque might help you get it loose without damaging anything.

If you're still having trouble, try using a solvent like acetone to carefully dissolve any hardened thermal paste—just remember to clean up afterward with alcohol to avoid damage. Additionally, if you can, work on the CPU while it’s in a new motherboard setup to help heat things up.