Have you looked into hyperacusis? I have it and there are many noises I can't deal with that most people don't hear at all. This includes pretty much every computer I've come across since developing the problem. Other noises like electric meters, electric mains, fan motors, wind noise, locations with lots of echoes, and strangly the noises crickets make. All these noises cause cognitive and attention issues as well as dizziness and nausea. Many noises are just plain painful even though they are far less than 80 decibels. I've seen countless neurologists and audiologists and have made a small amount of progress with tinnitus retraining therapy and clonazepam. A simple test to eliminate hyperacusis is to buy some cheap foam 33db earplugs and see if that helps you handle the situation better.
For the computer, have you tried putting it in a different room and running a long display cable and using Bluetooth keyboard and mouse? This setup allows me to use my computer for up to an hour compared to less than five minutes with it in the same room.
For the computer, have you tried putting it in a different room and running a long display cable and using Bluetooth keyboard and mouse? This setup allows me to use my computer for up to an hour compared to less than five minutes with it in the same room.