Cat fur is not the only cat-produced thing that can damage computers!
Several years ago I had the worst possible experience involving cats and computer hardware. I had just bought a brand-new RX-480 GPU (very expensive at the time, specially in this backward part of the world I live in) and was enjoying the just-launched Fallout 4. The computer was assembled inside a not so well ventilated case and started showing signs of overheating during extended gaming sessions.
My first idea was to remove the cover of the computer and play with it open, and put it back again when finished. Everything went fine until it didn't.
My house is home to six cats and as any cat-owner knows, whenever a new cat is introduced there is a bit of territorial re-shuffling and infighting. The fifth and sixth cats were recently and suddenly introduced (I inherited them when my sister died) and they were still at this stage of their adaptation into their new home.
One night I forgot to close the computer's case... at some point in the night I hear the familiar sounds of cats hissing and fighting and as it stops rather quickly I do not bother to get up and end the fighting.
Next day I go to the computer to check emails and do other morning stuff and after moving the mouse, the familiar login screen does not come up. Computer locked up? After rebooting, the familiar "beep" but no video signal. Loose cable? I reach behind the computer and then I smell the very unmistakable odor of cat pee...
It just happened that during the previous night fights, one of my cats somehow lost bladder control and sprayed cat pee around the general area where the computer case was... And some of it landed just on top of the GPU's circuit board.
I tried everything I could to revive it... washing with DI water and putting it with a dessicant, drying under the sun, drying in the kitchen oven, etc. to no avail. The GPU was now an expensive paperweight and a bad one at it.
Miraculously, the rest of the computer was unaffected. Back to integrated graphics for some more time...
Of course I bought a new larger case with much better ventilation after that.