Question Grinding noice during startup

denitora

Commendable
Jan 11, 2018
22
0
1,510
My 4 y.o pc has been making loud grinding noices during startup which cease afterwards. There is no performance issues with it. However all I could do to check was a 3dmark benchmark test. I tried opening the case to listen, but I couldnt identify whether the sound was coming from fans(hopefully) or hardware. Should I keep being concerned about this? What else can I do?