[Q] Fastboot not working (not turning on) due to OS failure topic

Hi, after rooting my KindleHDX, I attempted to access the google playstore. After installing safestrap, and creating a ROM, I "accidently" rebooted without installing an OS. My kindle won't turn on, and I'm stumped on what to do. I really hope it's not bricked, so I'd sincerely appreciate the help. Thanks