One of the biggest challenges we face when buying a new computer or reinstalling a system is installing the drivers for all hardware. Without a driver, the hardware won't work; a driver that fails to install or uses the wrong version can cause various system failures (blue screen, black screen, dead screen, no sound, frequent restarts, some software/game/device does not start or run properly...).

The DriverStore folder (C:\Windows\System32\DriverStore) is used to store the third-party drivers for hardware by Windows. When you manually install a hardware driver, the corresponding driver files will be copied to this folder. When you uninstall this driver, the files should be removed too. However, if you just update a driver, then Windows will keep the old versions of this driver in case you encounter a problem and roll it back in the future. But the problem is that we almost never need to use those old drives.