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Windows 7: Suddenly folders load very slowly (blank) green progress bar loads.

21 Oct 2013   #11
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

Thank you Arc for your help.

My System SpecsSystem Spec
21 Oct 2013   #12
A Guy

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x64 SP1

You might want to open Resource Monitor after startup, with all 4 sections expanded. See if there is high CPU, Memory, HDD, or Network usage, and if there is a program using high resources.

Start> In search box type resource monitor> Enter

A Guy
My System SpecsSystem Spec
21 Oct 2013   #13

Windows 7 Ultimate 64 bit

Dear members thanks again for your valuable feedback.

I think I have found the troublemaker!
It's the process named 'dllhost.exe' com surrogate.

Disabling it solves the problem.
It's not always visible in the task manager.

Every time I open the Aero theme menu it shows up for some random period and then disappears.
Just some minutes ago it was using more than 20% system memory.

Everytime I open a folder with thumbnails the memory usage number keeps on counting behind the process in the task manager.
Disabling it brings back the thumbnails in all the folders.

Did a search for 'dllhost.exe' and found many people with similar problems and solutions.

View [SOLVED] Blank icons/white thumbnails + slow My Computer + COM Surrogate crashes'

It must be some kind of codec related service that jumps in when visual elements are loaded.
I am reading through the solutions right now.
My System SpecsSystem Spec

21 Oct 2013   #14

Windows 7 Ultimate 64 bit

I think I have found the problem and the solution!

'dllhost.exe' is a thumbnail generator of windows.

On my desktop there was a broken video file.
So just after windows logs on and sees the video file on the desktop the 'dllhost.exe' tries to create a thumbnail of it, but can't so it starts eating all the memory and keeps eating it more and more.

Hence the reason why the system becomes slower and almost halts after some seconds.
And because the 'dllhost.exe' was so busy with that one corrupt video file it couldn't make any other thumbnails like in the folder or the aero theme template icons!

Solution: remove the corrupt video.

I have gone through the different files and finally isolated the video file by putting it in a folder. Turning on the thumbnail view then checking the dllhost memory usage.
By disabling and enabling the 'dllhost.exe' in the taskbar I could reset it to check each file.

Now everything is fine.
My System SpecsSystem Spec
21 Oct 2013   #15

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit

Its good for you that are able to identify the file for which thumbnail generation was becoming the problem. :)

Well done.
My System SpecsSystem Spec
21 Oct 2013   #16

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM

Glad you found the problem and fixed it!
I did mention in post #3 a corrupt video file as a possibility.
My System SpecsSystem Spec
21 Oct 2013   #17

Windows 7 Ultimate 64 bit

Thanks Arc.

Indeed DavidW7ncus! Thanks
My System SpecsSystem Spec
21 Oct 2013   #18
A Guy

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x64 SP1

Glad you got it sorted. Indeed we have seen this before, with corrupt images as well.

A Guy
My System SpecsSystem Spec

 Suddenly folders load very slowly (blank) green progress bar loads.

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