The 620 does not have any PS/2 ports. This system is running XP SP2. I have reset the BIOS to defaults, and ensured that the USB settings are correct. I've tried all the ports, and the USB mouse works ...

Nvidia has plugged one hole in the leaky ship of its RTX-50 series graphics cards, with the release of a fix for black screen issues that have plagued some new owners after a recent driver update.

Sister-in-law has a Dell Inspiron 5680 that seems to have bricked after a bad BIOS update. The system is an i7-8700 with 1x8GB DDR4 RAM (SK Hynix 2400 MHz), 128GB M.2 SSD (SATA, SK Hynix), 1TB HDD, ...