I installed a dual boot of Ubuntu and Windows 7 and my Ubuntu OS got corrupted, somehow over time I added 2 more Ubuntu OS's. I understand I'm a complete idiot and shouldn't have played around, but I looked it up on Google and they said I could delete the partitions, so I tried. Now my computer gives me a Grub Error, I tried my own obvious: I got my installation USB's for Ubuntu and tried to boot from them, but I got a Grub Error again on one USB and on my second USB I got a blank command prompt where i couldn't type anything.
I don't care to get the data back, but I would like to be able to use it. I don't care to recover any of my files for either Windows 7 or Ubuntu. I only care to get my computer back.