First backup your DATA.
All Linux code must be deleted using the CLEAN ALL
command. As you have had linux on the HD you need do a Clean all & full format.
Disk - Clean and Clean All with Diskpart Command
Do a full clean & full format in command prompt.
Type in command line
SELECT DISK # (win HD)
CREATE PARTITION PRIMARY
SELECT PARTITION 1
SSD / HDD : Optimize for Windows Reinstallation