Hey, new to this forum, not exactly a computer wiz either so bare with me. Basically, I moved the location of my tower yesterday as I was switching rooms, it was working completely fine and I shut it down properly etc before moving it, took it into the new room, set it all up, turned it on and it only gets to a black screen with "error loading operating system" keep in mind I didn't try reinstalling windows or anything on it, it was just me turning my computer back on like a normal day and that shows up. From what I've read it seems like a harddrive error and the harddrive is broke. I inserted my windows 7 disc (yes it was running windows 7) went through the bios etc to set it to boot from the disc, as I was in bios I noticed that the bios still detected my hdd so that would mean the hdd is not broke? Anyway I tried setting it up through the disc and it give me the option to install windows 7 to my hdd and also my external hdd, it said it can't install disk 0 partition 1 on the external so I tried installing it on the internal hdd on the windows 7 install screen and it come up with error 0x80070057. As I said before I am no computer wiz but if anybody is willing to help me figure out how to install windows back onto my computer on the external or internal i'd really appreciate it, thanks guys.