You should perform a clean installation of Windows 10 RS1 and delete all partitions during installation. See here for details: This system needs its UEFI BIOS updated to the latest version before carrying out a clean install of Windows 10. You can clean install Windows 8.1 following the instructions here: [URL]  See video 4 and 5: [URL] 
Hi guys,  I just wondering is it good to remove those recovery partitions as indicated below ? (especially the 12.98GB one) [IMAGE] I am not sure what's inside this partition but I am assuming it could be a recovery image for Windows 8, because my laptop was running Windows 8 since I bought it in November 2013 but then I transferred all the data from the original HDD that comes with the laptop into a new SSD in December 2015, and since that day those partitions start appearing there.  I tried to perform a clean install Windows 10 on my laptop, but those partitions are still sitting there. Will my operating system fail/crash if I decided to remove them ? will I still be able to perform a full reset or clean install on Windows 10 if they are not exist anymore ?  My laptop model: Dell Inspiron 15 7537 (2013 mid)  Thank you!
Remove Multiple Recovery Partition in Windows 10