I've installed an SSD a few days ago, which is now working along with my HDD.
Today my PC started to make a noise as if it's shutting down from time to time, while it's still working. I believe it may come from the PSU. My specs are:
AsRock H81 Pro BTC
Intel Pentium G3258
8GB RAM Geil 1600MHz
MSI GeForce GTX 650 Ti 2GB
HDD Toshiba 1TB DT01ACA100
SSD Goodram 120GB
CHIEFTEC GPA-400S8 400W ATX
The noise resambles a loud click - I don't know how to explain it (I may be able to record it, though I think it's pretty standard sound for most computers powering down). Oddly, when I used to power off, my fans would stop working immediately with that sound. Once I installed an SSD, they stop working after ~3 seconds.
Also, from time to time my HDD makes a startup noise while the system has already been working for several minutes.
P.S. I just restored BIOS settings and haven't heard these sounds yet, but I'll keep observing (Edit: no, they're still present). I'd like to know, why would my PC even start to act so strangely (I didn't change anything BIOS or system related before it started. Only installed a few programs, like a PDF reader).
Edited by igorl53, 13 September 2016 - 02:13 AM.