While my computer was updating, I went to reset the plug my router was in and forgot my computer had been updating. Now the computer comes up with a repair option that leads to some loading bars at the bottom followed by a blank screen, or a start windows normally option where it is stuck at the starting windows screen. I've tried using my windows repair disc but after trying the restore, the safe mode, and a few other options, they all lead to either a blank screen or the starting windows screen as well. I'm running a windows7 home premium 64-bit OS that I bought to upgrade from vista but I can't find the CD and don't really have the money to buy another OS or get it repaired unless I have too. My computer is the Gateway LX6810.