1. The drivers that the maker wants you to run? You may have to disable W10's own driver update to stop it from replacing good drivers then follow the maker's choices for drivers of motherboard, graphics card and the rest. Along the way you learn to google up DDU and how to disable W10's own driver update system.

2. I see no mention of the power supply.

3. The 1TB HDD is a common source. Use Speccy to read more than health but performance in the 01 and 07 values. Beyond 100 and I call them bad. No, again, no, the drive has not failed but would never be used in a PC the owner expects performance.