Win 10 PC awfully slow

Checking your disk.

I asked you to use 1 of these programs.

Check your disk- Crystal Diskinfo, Hard Disk Sentinel.

Please understand that those check the physical state of the entire physical disk.

chkdsk checks the file system on the partition on which it runs. That's not the whole disk.

These are entirely different things. A, then B.

So
A Check your disk- Crystal Diskinfo, Hard Disk Sentinel.
B If ok from an admin command prompt run
chkdsk c: /scan

- you will not have the difficulty you reported before (which is entirely normal and requires the PC restart)

Result right on screen.

Look towards the bottom.

Advise if it passes or fails.

esebm said:

The PC was purchased new about 5-6 years ago.

I tried the chkdsk command but it's not running because the volume is used by another process.
There's no app running at all.

You didn't follow the command I gave you.
Open a CMD window as administrator and type:
chkdsk c: /f
It will say your disk is in use and ask if you want to schedule to next start = yes
Restart

Download extract and run CrystalDiskInfo. It's a portable. Doesn't need to install.

esebm said:

Here's a screen shot:

The C: partition has 23G of free space. Plenty of space.

Pentagon said:

@esebm
Be careful! The last partition *.image (11,08 GB) contains probably a factory reset image. Any mistake can ruin your system. If you don't want the computer to be reset to the delivery status accidently. delete the last partition. But it's your choice.

Agree
I would say that the computer came with Win 7 or 8 as the MSR partition is 128M (typical Win 7) and not 16M as on Win 10.
If even it came with Win 10, after some years, Factory Recover partition is useless as Win 10 has been updated to new versions and you can always do a reset or even a clean install.

@esebm, any new information?
Did you check the disk heath with Crystaldisk info?

clutter can make pc slow over time , i use Revo uninstaller - tools - junk files cleaner - checkmark only C drive(in you case E drive also) - scan - then delete everything. (it takes awhile to scan)
then i use browser cleaner and clear everything (even if a browser isn't installed)
then i use windows cleaner and clear everything
then autorun manager and uncheck everything you think you dont want to start running in background (be wise here)

also check in settings - background apps - and switch apps off you don't want running in background

then of course cloning your HHD to a new SSD will make that machine fly again...

your wife will love you again