I don't know about Alienware (there is a separate forum section just for Alienware HERE ) but on other model Dell's if an OS other than the original is installed the Dell recovery partition is no longer useable and you can only reinstall with discs.
I am not a Dell Employee
Dell forum member since 2002
Dell Inspiron 15 - 5577 Laptop
Home Built Desktop PC with ASUS ROG Z170, i7 6700K CPU
Windows 10 64 bit Pro and Windows 10 Insider Program Beta Versions. SSD drives. Cakewalk by BandLab and Studio One 4.1 Recordng Studio Software.