What's the problem with the high-frequency squeak in the box when the big game is running?
Pay attention to several key words. When running large games, the high frequency is sharp.
Generally, there are CPU fans, graphics fans, hard disks, power fans, damaged capacitors and cooling fans in the chassis.
If you double-click the icon to enter the big game immediately, it means that the hard disk is processing a lot of data, and there is a problem, often the hard disk is broken (if it didn't exist before)
If you play a big game for a while before making a sound, it is often that the CPU is overheated, and then several fans are intelligently started. If this is not as sharp as before, it should be that you need to drip oil between the fan bearings (you can't do it yourself, because you have to seal it after dripping oil, otherwise it will leak oil).
If it is not on it, it may be a capacitor on the motherboard. When the load is high, the capacitor will also emit the early current sound of Explosicum. . . .