I have a Lenovo Idea centre A730, and had to buy a new hard drive after the original was damaged. I installed the hard drive and have attempted to install windows 8.1. I was able to access the bios to change the boot order and start the install, which started fine. I turned my back and came back to it after several minutes and found just a black screen. I rebooted and got a screen telling my the os couldn't load and needs to be repaired, then gives the option of starting in safe mode, but when I select F5 to start in safe mode with networking, it goes back to a blank screen and nothing happens. Suggestions?