Here's a weird one! I have a Lenovo N22 laptop that I use for occasional web browsing, Zoom video chats, etc. No crucial data is kept on this machine. However, I do keep a 128 GB Micro-SD card in the Micro-SD port as a data drive and to house smaller programs such as IrfanView, as the boot drive "C" is only 56 GB. This SD card used to come up as Drive D:\ upon boot up. However, in "This PC" now it comes up as "E", and for "D" there is a little drive symbol, then " ? D:\ "....