Hello,
Windows 7 refuses to let me save/delete etc files on my Android tablet's SD card, claiming the file system is 'dirty'.
The last time this happened I followed the prompts to correct it and ended up with a bricked SD card which was unuseable/unformatable and had to be discarded...
Yesterday I used the "Get Windows 10" option on my Windows 8.1 HP Envy-15 laptop. The process seemed to work fine and I managed to login and use the new OS fine. However, I decided that while I was installing a new OS that I might aswell clean the system back to the Windows 10 factory settings...