Windows won't start after removing backup/restore partition on XPS L502X laptop

Hello everyone,

I had been running Linux and Windows for a while and everything was working fine, until I need more space for Linux and decided to remove a small partition which didn't seem to be used by Windows (and thought it'd be for backup).

I haven't been able to start Windows since I did that, and don't even get the Windows boot screen. I think the Windows partition is fine because I can access all the files from Linux.

So, how can I reinstall Windows on this laptop since it didn't ship with a CD/DVD? I've already read many docs on Dell.com and cannot find any solution.

Thanks in advance!

PS: Don't know whether this makes any difference, but I live in the UK and bought the laptop here.