When it comes to PC maintenance, I fall squarely in the lazy camp. I hadn't deep-cleaned my PC in three years, and the one day I decided to finally do it, I nearly broke my CPU. It was a relatively free Saturday last week, and I was already cleaning my desk when I thought I might as well get to that overdue deep clean. During the cooler uninstallation, I accidentally managed to bend a few rows of the CPU's pins. Thankfully, the damage wasn't permanent, but I should have taken some precautions before removing the cooler. Sadly, I was too worried to click photos while fixing my mistake, but I'll still try to show you what happened.

Removing the cooler was...painful

It refused to come off

The temperatures on my Ryzen 7 5700X have remained elevated since the day I got it. The idle temps rarely ever drop below 60℃, despite the 240mm AIO cooler I have on the job. This is why I decided to reapply the thermal paste during the unplanned deep cleaning that I found myself in. I had a tube of Arctic MX-4, which I thought would fare better than the Cooler Master MasterGel that had graced the CPU for the last three years. Changing your CPU's thermal paste is recommended once every three years, so I was confident that I wasn't wasting time on this side mission.

After unscrewing the two bolts securing the cooler to the motherboard, it was time to release the socket latch, twist the heatsink a few times, and lift it off the IHS. This was easier said than done. To my surprise, the cooler remained fastened to the CPU despite multiple gentle twists. Then, during one of the twists, it suddenly came off, with the CPU still securely attached to the heatsink. The seal between the cooler and the CPU was just too strong. It was a few moments later that I realized that some of the pins on the underside of the CPU looked off.

I was horrified to see I had bent a few pins in two different rows near the center, and some of them near the edge. Needless to say, the cleaning was delayed indefinitely as I mentally calculated the cost of a new AM5 CPU, motherboard, and DDR5 RAM. I was almost convinced that I had broken my CPU only after three years of usage, and all because I felt guilty about not cleaning the tower in three years.

Fixing the bent pins was tricky

I didn't want to cause more damage

When I had recovered from the initial shock, I remembered that bent pins don't equal broken pins. If I could bring the pins back into position, the CPU might still be fine. It was at least worth a shot. I decided a thin box cutter would be the ideal tool to undertake this risky but necessary task. I not only had to fix the bent pins, but also ensure I didn't bend or break any other pins. It didn't help that identifying the exact pins that were bent was difficult, as I didn't have a magnifying glass or anything similar. I had to rely on my eyes and my phone's macro lens.

After around 40 minutes of slow and painstaking work, along with the company of my brother to keep morale high, I was confident that all the pins were back in place. I cleaned the old thermal paste, applied a coat of Arctic MX-4, installed the CPU and cooler, and reconnected the fan and pump cables. It was the moment of truth. I connected the PSU cable, turned its power switch on, and pressed the power button on the case — nothing happened.

I confirmed that everything was turned on, and tried again, but the PC remained dead. Before I spiraled again, I applied some pressure on the PSU cable, and the PC showed some signs of life. Pressing the power button turned the lights on, and as the PC booted to the desktop, I finally breathed normally. I had narrowly escaped permanently damaging my CPU, and realized that I won't have to go through this again, at least not for 2–3 years.

Some "warm-up" would have made things easier

I made things needlessly difficult for myself

When I was browsing Reddit after discovering the damaged pins on the CPU, I came across multiple comments that recommended running a heavy load before removing the CPU cooler. This heats the thermal paste up, loosening it and making it easier to lift the heatsink without taking the CPU with it. A few minutes of Prime95 or Cinebench, or even a long and demanding session, can make things much easier when trying to break the seal between the heatsink and the CPU's IHS.

I wish I had thought of this before bending multiple pins on my CPU, but at least I know what to do next time. I'll also try not to wait so long before replacing the thermal paste, switching to a two-year cadence instead. I could also invest in longer-lasting thermal paste or carbon-based thermal pads that don't dry out over time. In another two years, I will probably be using an AM5 PC, so all of this will be pushed to the near future.

Be careful when repasting your CPU

It was a close call for me, but it could easily have gone the other way. Removing the CPU cooler should not be a stressful job, but it can become one in some cases. Running a demanding workload for a few minutes can make your job easier as the thermal paste becomes loose, and the seal between the paste and cooler becomes slightly weaker. You can then twist the heatsink and lift the cooler off without damaging the CPU.