Hi,
if you want to look at temps and stuff, I can recommend HWMonitor: HWMONITOR | Softwares | CPUID
If you want to stress test your system, I can recommend Cinebench for your CPU: Cinebench 2024 Downloads - Maxon
as well as furmark for your GPU: FurMark Homepage (geeks3d.com)
For a hard drive, probably crystal disk mark: CrystalDiskMark - Crystal Dew World [en] (crystalmark.info)
Other than that, I don't think diagnosing a weird sound using software is going to be easy... Have you tried removing the HDD and seeing if the problem still persists? The best way to test Hardware is generally other Hardware...
Sincerely,
LightJack