How to fix or prevent missing OpenCL.dll file after windows 10 update
A problem that is occurring when updating windows 10 is that openCL.dll file is being deleted. This is a registry file and is fundamental to the operation of your computer, the devices and applications related to it.
Step by step how to copy or replace your OpenCL.dll file
Click on "type here to search"
Type "my computer" click "this pc"
Once this pc opens click "local disk C"
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Click the "windows" folder 
Click the "system32" folder 
If you have already updated windows and your file is missing
At this point if your file is already missing your best bet is to follow the same steps and copy it from another computer into this folder.
If you still have not updated windows and are looking to back up this file
If you have not updated windows yet and the file is not missing yet right click the file shown below and copy it to a memory stick before updating windows 10. If you are using your computer to mine crypto this file missing will give you the error at the top of the page it's a registry file related to your video card.
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