Find file default extension.

I ran a registry cleaner with PCBooster and I guess this is what has changed a lot of my file extensions to open with Notepad.  Now when I try to use some programs such as HP help and Support, to display system information, I get a notebook full of gibberish.
Is it possible, in addition to using the backup of the registry cleaner as it has been uninstalled and these files are not available onger to restore file associations in default programs?
Thanks in advance

I only know how to reset the one at a time. There must be a method better than mine...
Right click on the program you want to open > click on OPEN WITH > choose default program. If the default program is not listed, click on choose a default program > if still not listed, click other programs > OK

t-4-2

Tags: Windows

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