Windows 10 100 % disk usage

Is there a way you replace your hard disk, if it is in warranty the best you can do is to replace it with a newer one. My strategy is always to stay on a safer side while using XERO & QUICKBOOKS, I use both and have a separate system dedicated to just these with 300 GB sata hard disk, for my other tech business that requires a lot of dedicated space I have availed 2TB SATA hdd, but I never run a qb or xero there, couldn't compromise clients data, as few years back I had suffered a similar problem though not exactly the same but got my sata hdd replaced from here (I do not prefer refurbished though) as it was under warranty, just had to talk a few times though. So having this issue means you need to change the hard disk for a better one, this could be a viable option in my opinion since I do not used to waste 30-40 hours in resolving an issue that cost more per few hours than the actual price of the drive.

Can you send photo of task manager showing 100% or less with click on Disk to sort order in Descending. I solved my Old 2GB RAM laptop 100% CPU usage. It works fine and Quick open apps than previous. By using task manager, 80% problems  can solved easily. 

Reply to this. I am happy to solve your problem.

The OS is hung up. The bandwidth is stuck at 100% while the apps all total a bare minimum. IT takes forever for a keystroke to show a response on the screen. I wish it were as simple as closing a few apps. This machine has 12GB RAM and 1TB hard drive. It should not run so slow. Here is a typical usage that is locked up at 2MB/s which is low compared to the 20+MB/s capabilities.

I mean i want to see photo of Processes with Disk usage(descending). I understand disk usage is 96%. After seeing process names, i can decide what to do? What are causes in PC. 

Also scan drive errors. For more help to scan drive refer this:

https://windowsreport.com/scan-drive-errors/

First of all disable background apps by following :

Go to Start Win, then select Settings  > Privacy > Background apps. Turn off.

Remove Temporary files

Defragment your Windows 10 PC. Refer: https://support.microsoft.com/en-us/windows/defragment-your-windows-10-pc-048aefac-7f1f-4632-d48a-9700c4ec702a

Remove unwanted apps by typing "uninstall a program " in type here to search. Or you can also go to control panel and click on uninstall a program. 

Remove Hard Disk and insert again.

Your PC performance will surely improve. 

If problem still not solved, reply to this. I am very eager to solve Disk usage problem of any windows 10 PC. I learned and experiment and do changes and got improvement.

Don't forget to attach photo.

I appreciate your suggestions but none of those things have worked. I even did a clean windows install and the problem returned.

Here is the screenshot of task manager on the problem computer, notice there is 0.4MBs disk bandwidth but 100% usage. Whatever is using the disk is not sh I need OS level debug in order to figure out what is happening.