Error Oxc0000020

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unable to open file explorer- therefore no access to downloads,photo's etc. fault C;\WINDOWS\System32\DU170.dll
Error Oxc0000020
 
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Trouble

Noob Whisperer
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Can you use Ctrl + Alt + Delete
To launch task manager?
If so use the menu bar "File" to run new task and type
C:\Windows\System32
hit enter or click OK
Scroll down to
cmd.exe
right click it and choose Run as Administrator
At the command prompt type
sfc /scannow
See if that provides any help.
 

Trouble

Noob Whisperer
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If I am understanding you correctly, your computer is unusable due to the problem .dll file (Windows Direct User Interface) crashing Explorer (windows shell).
If that is correct then I would suggest.....
Booting from the installation media and on the second page after choose keyboard and language, you use the link that says "Repair Your PC".
You should be able to use the advanced troubleshooting options to perform a "Start Up Repair". I would try that first

The installation media can be obtain through either of these two resources.

https://www.microsoft.com/en-us/software-download/techbench
OR
http://www.microsoft.com/en-us/software-download/windows10

Once you have the ISO, you can use ImgBurn to burn it to a DVD or Rufus to burn it to a USB ThumbDrive, either of which you can use to boot your computer.
 

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