Computer sometimes freezes for 10-20 seconds

[Charios]

Hey,
 
I recently did a hardware upgrade to my pc and it started freezing sometimes, I can't even move my mouse around. I tried updating drivers, BIOS, checking disk for errors, memory test, reinstalling windows and nothing helped so far. Event Logs show no errors aswell.
 
 
MB: Asus Prime Z370-A
 
CPU: Intel i5-8600K
 
GPU: MSI GTX970 GAMING 4G
 
RAM: Corsair Vengeance LPX DDR4 2x8GB
 
SSD: SAMSUNG EVO 850 250GB
 
OS: Windows 10 Pro 1809
 
Additional information:
 

• Task manager and other programs don't show any indications of power drops or spikes.
  The freezes started happening after changing my hardware (MB, CPU, RAM)
  Power Savings are disabled and on High Performance
  Tried increasing virtual memory to no avail
  When computer unfreezes I hear HDD working sound for a few seconds (only movies are on hdd, so that was strange because I haven't even opened the disk and I've also noticed it only once because it was the first time that I decided to "listen to the system" when it unfreezes).
  Freezes happen once every 1-2 days

[DaveLembke]

Anything in the Windows Event Logs to point out a trouble area? Most systems that act like this start to report over and over in the event logs about an issue.

Also you mention hard drive makes a sound but i dont see it listed in your hardware list, I just see the SSD. What Hard Drive make/model are you using?

Is this SSD new to the equation as well or has it been running without problems on a prior build you had? I'd check drive health for all SSD and HDD's with CrystalDiskInfo. A delayed write issue can cause symptoms like you have, which would also be listed in the Windows Event Logs. Delayed Write errors are generally a failing drive, however I had once a power supply that was borderline causing the drives to hiccup and list as delayed writes and so I swapped drives to later find out that the power supply itself was tripping them up to error yet the rest of the components kept running and no BSOD.

[Charios]

Hello, I was using SSD and HDD both prior the change. Nothing in the event logs, here's what I've tried so far:

• Updating/Downgrading/Resetting BIOS
  Changing virtual memory size
  Upgrading chipset and other drivers
  Disabling hardware acceleration on Chrome
  Using another browser itself (as I thought Chrome was the issue)
  Re-seating CPU/GPU/RAM into same or different slots
  Trying different SATA cables
  Trying another SSD
  Unplugging HDD
  Unplugging GPU
  Memtest 2 times, one with 4 and another with 8 passes
  Checking temperatures (they are fine)
  Running stress test on CPU/RAM and GPU (no issues)
  Disabling Power Savings
  Disabling C-Steps
  Updating SSD firmware

And I've even have a speccy snapshot ran from safe mode: http://speccy.piriform.com/results/UqftTs2ALRoYNb2KncRgjbi