can't open with double left click

have to single right click then left click on open to open files on desktop. also, can't keep internet explorer open. comes open for one second then gone. firefox no problem using method of rt clk, lft clk have run anti virus, malware bytes etc same result. no infection but can't open files. plz help!

 

You do know that you can change to single click to open files and folders. Maybe that will work for youl

1. Press Windows Key + E to open Windows Explorer.
2. Click on "Tools" then on "Folder Options".
3. With the "General" tab selected, choose the item labelled "Single click to open an item (point to select)".
4. Click "OK" Exit out of the Folder Options dialog and out of Windows Explorer.