Laptop showing no bootable device

@iamviper sounds like you have lost the OS from your drive. No matter what you do now, the concerns that I would have is that malware/viruses might still be "present". Open your BIOS by tapping F2 on your keyboard when the laptop is first restarted. Now check and see if your BIOS still recognized your drive. Next you will need to get a bootable drive (like a USB) where you could install anti virus/malware programs on to in order to check your HDD. Once cleaned, install a fresh version of the OS to that drive.