Windows 7 crashes on startup. Can't restore, repair or repair install

I got the issue turning off my laptop during an unannounced update.
pressing F8:
System restore failed
System repair failed
Factory reset failed

after start windows went into repair session. witch failed.

Cancelled the restart,
pressed a link at the bottom of the window to restore drivers.
browsed for the driver
chose the Drive that contained my Windows installation.
right clicking > Properties > Check disk
received a warning for mounted drive!
Forced unmounted the drive
Ran the Check Disk. > found some errors and fixed them.
restarted.
Windows updated itself.
Got a working machine.

summary of the story
Don't fu** with Windows update, or it will Fu** you back!! and Update itself no matter you want it or not!!

Mattressi said:

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 same thing?), but they are telling me that they aren't finding anything wrong. Also reverting to a previous state results in an error and I can't do a system restore because I have no system restore points. I was able to backup all of my most important files, thanks to that excellent guide on here which tells you how to use the "load driver" window to do it. So, I'm confident that my hard-drive is still mostly functional, since searching through it went fine, with no corrupt files or anything noticed. At first I thought the problem was something other than my hard-drive/installation, so I put my hard-drive into another computer (which was working fine) and experienced the same problem.

I read about the "repair install" option and got really excited that this might fix my problem. However, I read that you can only do it while logged in (which, again, I cannot do) and this was confirmed when I tried to do it anyway. This sounds like the perfect option for me, but I can't get the computer to let me log in, whether in safe mode or not.

Does anyone have any other ideas about what I can do? I'd really like to avoid doing a fresh install of Windows 7, if at all possible. I'm sure there has to be some way to fix this, since I'm able to access all of my files on the hard-drive.

Thanks very much for any responses.

Sounds like a unidentifiable hard drive or RAM issue. try replacing one of them