Not familiar with "powerdesk"
AND
I'm not completely certain I understand fully.
IF you browse to a zipped file using Windows file explorer...
Right click that file and from the right click menu choose 7zip and then choose extract here (or another option from the 7zip menu), that...
File Explorer crashes??
It sounds like you're saying that as soon as you navigate (using file explorer) to a location containing a zipped file, that the second you highlight it with the left mouse button, that File Explorer crashes.
Is that what is happening?