How to restore/repair Windows files without an installation DVD?

All of a sudden, my computer crashes every time when starting up the computer. When it gets to the "Windows" screen with the small moving dots that form the windows logo, it crashes just as they start their animation. I've tried using Startup Repair, as well as command line repair (possibly the...

Recently my laptop developed a problem wherein in would not shut down properly. It logged out of Windows with no trouble, but froze on the System Shutting Down screen, and I had to power it off with the power button. I tried this a couple of times to make sure that it wasn't a fluke. It was not....

PLEASE SOMEONE HELP ME. 35+ startup repair attempts and still no dice Windows failed to start.a recent hardware change may be the cause. Start up repair cannot repair this computer automatically. Windows cannot find a system image on this computer No restore points No backup or repair discs...

Well, I've fudged up my registry again. And once again, it seems the only recommended option is to re-install windows. Before I do this (which will be for the second time, my fault I'm afraid), I'd like to make sure I have something correct here- Will performing a repair install (using the...

Hello, I've been unable to access my custom build computer since around 5:00 yesterday. I chose to restart my computer at around that time just because it was slowing up a little and I usually do that to help, I had not installed any updates or new programs since 2 days ago when there had been a...