Windows 10: Issue with Pc slowing down and near freezing

Hello everyone, and first of all thanks for any suggestion you'll be able to give me (and sorry for my bad english too!).

It's about a week that my pc suddenly became slower: internet, mail, games, but also excell or world, no matter the progs i try to use, it takes ages to start running them (i.e.: 3 minutes ad 25 sec since the click to open this forum from my favourites).
It seems that it starts to run, then freezes, then run some more, then slow down again, etc.
When i say "run some more" I mean that it run for some time, maybe few secs, but it happens also that it runs for a couple of hours, usually after at least 30/45 minutes of this hiccups game!
I can phisically hear my pc runnin, then slowing down and silencing, then running again.
For istance, i run my antivirus and it reads 20 files, then stop for minutes, then read other 80 files then freezes again and so on

I thought it was a virus, but my antivirus are not able to find anything. I have:
1) Trend micro internet security full version, not the free one and
2) Malwarebytes premium version.
Both are full updated but they don't find anything.
I tried also:
3) Trend House call: nothing found.

Then I thought it's something else, so I tried with
4) chkdsk: nothing found.
5) Auslogic disk defrag: defragmented some, but everything it's ok.
6) I tried the stress test with Prime 95 and it run for 2 hours with nothing found.

Can anyone suggest me something else to try?

I added all I knows of my system specs, and my Windows version number is:
Windows 10 ver 1903 (build SO 18362.900)

:)

 

GPU-Z 0.7.8 / 0.7.9 / 0.8.0 Bios reading not possible GTX670-solved with gpu-z 0.8.1

@Maban - does GPU-Z fail the same way for you the way it does for me? I.e. total system freeze/lockup, requiring a hard reset?

@W1zzard - I will try the suggested steps later today, as I am not near that PC at the moment.

 

Slow operation, crashes and freezing since windows 10

Hi Rakesh,

Thank you for posting in Microsoft Community.

• 
  What does it freezing? Is Internet Explorer freezing or computer is freezing?
  
• 
  As you said that slow operation, what is running slow? Are you not able to open any files/applications?
  
• 
  Does your PC hangs?
  

I suggest you to check the issue in Safe Mode and see if it’s working slowly.

To enter Safe Mode in Windows 10:

• Restart your PC.
• Press Shift + restart before the Windows logo appears.
• Click See Advanced Repair Options.
• Click Troubleshoot.
• Click Advanced Options.
• Click Windows Startup Settings.
• Click Restart.
• You then see a list where you can choose Safe Mode or
  Safe Mode with Networking (depending on whether you think you’ll need the Internet).

Once you do get into safe mode, be sure to check all of your drivers for issues. To do that, press
Windows Key + X and click Device Manager, and from that menu, get Windows to check all of your devices for updates. If driver updates are available, install them.

If the issue still persists, I suggest to restore the power plans to default.

To do so:

• 
  Open Power options
  and go to advanced power settings.
  
• 
  Select
  restore power plans defaults and then restart the computer and check if it helps.
  

Let us know the status of the issue.

 

PC Freezes

Hello,

To isolate your Windows 10 freezing issue, kindly answer the following questions:

• Aside from this error, are you also getting other error codes or messages?
• Where do you usually experience this freezing issue? Is it during startup?
• Other troubleshooting steps you've tried so far?

Looking forward to your response.