PC freezed, HDD led off.

[RoccoMartinello]

Hi to all.
My new computer (10 months) has freezed one time recently.
Until today it worked fine.
Mouse and keyboard became unresponsive and HDD led was permanently off.
I had to power off my computer using power button and then power it on again.
After doing this now it has no problems.
At the moment of the freezing I was only running Firefox 48.0.2 with 14 tabs opened on various web sites.
I don't know if the problem can be caused by many tabs opened at the same time, but usually this is not a problem for my computer.
The computer is assembled and designed by me.
It runs Windows 10 64 bit Home
My specs:
Power supply: Antec VPF550 – 550W - 80 plus bronze – Active PFC ( http://www.eteknix.com/antec-strictly-power-vpf550-power-supply-review )
Case: Sharkoon REX8 Value Edition
Processor: AMD FX – 6300 six core processor with TurboCore up to 4.1 Ghz (L2 cache: 6 MB, L3 cache: 8MB)
Memory: two sticks, each one is as follows:
AMD 4 GB DDR3 11-11-11-28 @1600 Mhz dual channel (total 8 GB)
Motherboard: ASUSTeK COMPUTER INC. M5A97 R2.0 (Socket 942)
GPU: MSI NVIDIA GeForce GT 740 2GB GDDR5 – processor speed 1006 GHz - 128 bit
Optical drive: LG HL-DT-ST DVDRAM GH24NSB0
Storage: HDD Seagate ST2000DM001-1ER164 SATA-III 6.0Gb/s 7200 RPM - 2000 GB
Speccy found these S.M.A.R.T. data:

What can be the cause of this problem?
Can this happen again?
What should I do?
Thank you in advance for your answers!!!

 

[schwatzz]

When was the last time you ran a defrag of the HDD, assuming it is not scheduled?. Freezes happen from time to time though, it could have simply been a script that wasn't responding in Firefox, something related to superfetch, Windows Update, anti-virus etc. They are still trying to work out the bugs in Windows 10, so it could have been related to that. If it starts to happen more frequently, then obviously something isn't working out.

 

[SuperSoph_WD]

Hey there, @RoccoMartinello!

I'd follow @schwatzz advice and defrag the HDD to see if the performance will improve. Another thing you should check is swapping the SATA cable connected the drive as well as the SATA port on the motherboard, these freezes could be caused by a faulty connection as well.
I'd also strongly recommend using your HDD manufacturer's brand-specific diagnostic utility to check the health and SMART stats through there as well. Make sure you run both the long and the short tests.

Keep us posted with the troubleshooting & good luck!
SuperSoph_WD