I was just using my computer(Windows Vista) listening to music (on it) while drawing something up for my class until my mouse and keyboard died luckily my BAMBOO pad was working so I "X" out the open windows and restarted my computer. As I was waiting the screen was black and the Windows Failed to start
showed up…and again my keyboard wasn’t working so the timer was over and it automatically went to repair, when that was done it showed again so I turned off my computer and turned it back on suddenly my keyboard worked and I just hit enter on "start windows automatically" then it just started working.

I looked up how to repair this problem but they all say I need the disc to Windows Vista which I don’t have so my question is How do I repair it now?