So... I purchased a CPU cooler (the old one was broken) and it just arrived so I thought this would be a good time to install it. Now the scope doesn't post.

I used a bit of force to get the retention clips off. It's the first time I'm using this type of cooler mount so I'm not sure if I damaged the motherboard. The board did flex a bit but I don't know if that's normal.
When I turn it on, the fans start spinning and after a few seconds I hear a single beep.
Looking at a service guide, the beep means a "refresh failure". Whatever that means.