Windows 10 100% Disk Usage, constant spiking

Hi,your HDD is Toshiba MQ01ABD050 500GB SATA 3GB/s 5400RPM 2.5 Inch 9.5mm Internal Hard Drive
Could you advise your laptop model?

Disconnect any network connections.

First some basics checks.
Download and run Crystal Diskinfo (free), easy to find - SMART param checks and report the result - Good/Caution/Bad...
If ok Download and run Crystal DiskMark to check transfer rates and post the result.

Then run chkdsk on C:
From an admin command prompt
[Windows key + X, click command prompt (admin)]
chkdsk C: /F
Your PC will need to restart.
Make sure the result is clear or fixed- else do not proceed.
Post back the result, which you can get after a restart as follows:
How do I see the results of a CHKDSK that ran on boot? - Ask Leo!

Run chkdsk on D:

Then boot to Safe Mode - do you observe any problems?

Then do a clean boot - again, do you observe any problems?

Please post a screenshot of your task manager, clicking any column of interest to organise it high to low.

One thing you can do is to open task manager and go to the startup tab. Check which programs are running and see if you need them to do so. It's also useful to occasionally check your installed programs in control panel/uninstall programs to see if there's any you no longer need.

Hi, from your 2nd screenshot looks like your disk is failing.

Your first screenshot shows an amazing number of 0's. No data transfer? Really? But that's irrelevant as you need to replace your disk. Oh, maybe you didn't press 'All' to run the scan.

Your final screenshot- well, obviously that runs after a restart, as I said, but again that's really irrelevant given the 2nd.

Do you have backups of everything important on your drive?
If not, now's the last chance you'll have to try to copy anything you want off it. Maybe. Also try running Hard disk sentinel for another opinion.

Well it looks like you have one physical drive partitioned... if so, you're in trouble.

It's not just that it will stop working, but most probably some of your data is not recoverable.

I would stop using your PC except to recover data.

Hope you've been using disk imaging (as we constantly recommend) or a good backup strategy.

To use disk imaging (once you again have a functional PC), which more or less secures you against things like unbootable PC, disk failure, ransomware etc etc, you will need

a. to buy a replacement disk
b. to buy a further external disk at least twice the total amount of space you will use on that disk that you want to secure.

You will also need a CD, DVD or flash drive for the disk imaging program's boot disk.

If you do not presently have full backups, you will only be able to copy files from your disk to an external disk. You almost certainly will not be able to image your existing disk due to the failures which will result in read failures.

You're welcome. As soon as you get your new PC, start routinely using disk imaging and updating your image. E.g. Macrium Reflect (free) is strongly and frequently recommended here.