Alienware X51 R2 System Restore DVD Image Request

Greetings,

I'm Alienware X51 R2 Desktop Computer user. My Windows 8.1 OS and partitions were destroyed by some program but not virus. Unfortunately I didn't backup the system before, now there is no way to restore the system by factory integrated default hidden partitions. I've tried the Windows 8.1 image from MSDN, but it doesn't work, since I don't have the S/N to activate.

Could you please provide me an Alienware dedicated system restore DVD image? For free or need to pay, both are ok.

Thanks so much and hope to hear from you soon.

Ben