I have Ben hopping from iOS to iOS like win7 to 8 to Ubuntu to Kali and now I can't do anything with the computer what happens when I turn it ion is I get the hp logo then a little - in the top left corner and nothing else so I went and got a windows 7 disk from the manufacturer then it tells me remove disks or other media press any key to restart so I did and nothing happens I removed the disk and nothing hapens