Compressed air can spin the fans fast enough to cause damage unfortunately.

Did you use compressed air to clean out the fans?

It’s possible to fry circuitry if you artificially rotate the fans too fast, as this generates an electric field more powerful than the fans and their attached components are rated for.

Probably rare to cause damage with modern computers but an old PC might be more susceptible to this type of damage.

Am I understanding correctly that if users had 2FA, the vulnerability would be prevented from gaining access?