Computer stuck (100% disk usage) after exactly one hour of work

Hey,

This is my last resort. I don't know what to do anymore except formatting my PC.
Since a few days ago, my PC (Windows 10 on Dell XPS 15Z + 128GB SSD) is getting stuck EXACTLY 1 hour after reboot.
I have reinstalled Windows 10 a few days ago and it hasn't solved the problem.

What happens is that exactly 1 hour after boot, I see that Disk usage is going to 100% without any specific process taking any particular actions, then UI stops working, keyboard doesn't react and only the mouse responds.
This happens in a matter of seconds up to 1 minute and then I have to physically shut down my PC using the power key.

This is very weird and I have no clue why this is happening. I tried looking at the TaskScheduler but saw no tasks that run or supposed to run in the minute that the computer gets stuck.

Can you help?!

Thanks a lot in a advance!

I did it.
I don't think it even ended. It was stuck on 28% for a really long time and then the computer rebooted.
Any thoughts?

TairikuOkami said:

That is strange, because usually at least 3 Windows tasks run nonstop.


When you open Run and enter:

perfmon /res

Does Disk show anything on top, suggesting a high usage? Disk I/O would be shown in MB/sec.

What I meant was that I know exactly on what minute the computer hard disk will go to 100% usage and then the computer will get stuck. So I looked at the Task Scheduler to see if there's any tasks that are scheduled for that minute or a little before it and I saw none.

When it happens, Task Manager shows disk usage of 100% but no process is taking more than ~0.5% of usage.

I tried to chkdsk.exe and it made me restart my PC. so I did, but then chkdsk was stuck on 28% for a long time and then reboot.

OldMike65 said:

That command checks your hard drive for errors ....it should have finished ....sometimes it can take a long time to finish if it finds lots of errors. Too bad you didn't see it finish ....because I was wondering if your hard drive was failing. This would explain your long boot up times.
Could be other factors too, just thought that would be the 1st place to check.
Also could run this command
sfc /scannow and see what it reports to you.

sfc /scannow returned:
Windows Resource Protection did not find any integrity violations.

I'll try to rerun chkdsk prior to windows boot

ezradog,
Did you ever find a solution? You may no longer know details but do you know general direction you went to solve this?

I'm in the same situation.
Win 10, i5, 8g ram.
After 1 hr. disc goes to 100%. No apparent tasks hogging resources, no malware found, no bad disc sectors detected. I can restart almost immediately and PC is good for 1hr. No usual software installed; quicken, MSsuite. Lots of free disc space.