I have a PCS desktop with an ASUS Z87-A motherboard, dating from 2014. It is equipped with a Samsung SSD (C: drive) and a Seagate hard disc (D: drive).
Recently, the PC has developed problems with starting up. It is always left switched on to mains electricity, but shut down every evening...
Bios reported 'cpu fan error'. On opening the case found the cpu heat sink fan not running and also very dirty. Removed and cleaned the fan and the system came up OK, but still seems 'flaky' on startup. So I guess I need to replace the fan (not the heat sink as well). My PC is about 6 years old...