I think it started after a windows update( or perhaps my mother turned off the pc while it was updating)

okay what it comes down to:

Logging in takes a lot more time, sometimes it doesn't even log in. When I'm logged in I only get to see my wallpaper, no desktop whatsoever. The computer only reacts to ctrl alt delete, so I'm able to abort some programs which make me sometimes get my dekstop back. Furthermore I'm not able to run anything with( tho im able to change my time and other lilte things like that) , when I start a program when I have my dekstop back it doesn't work, neither does it work when I start a program through task manager. My process list has like 10 times svchost.exe and explorer.exe and some other really weird ones.( When I start aborting those processes some programs start working like: msn).
The computer just gets stuck at the blue login windows screen when I want it to restart or shut down.

That's pretty much it

Sounds like a virus.

1. Download the following programs on another pc and put them on a usb stick or something

Malware Bytes Anti-Malware http://www.malwarebytes.org/
Spybot - http://www.safer-networking.org/index2.html
Comodo Internet Security - http://www.comodo.com/home/internet-sec ... curity.php

2. Start your PC in safe mode http://www.pchell.com/support/safemode.shtml

3. Scan with the tools above. Remove all viruses.

4. Install CCleaner and remove all the crap from your PC the viruses left behind.

5. Reboot PC, get owned by me as usual.

Pro tip: Do not flame at your PC or it will kick you

ps: u mad I help Hell, Iron?

Sounds like you cant repair that. Too much damage. Really sad.

@ Penguin: Nah not mad, I know there is no way too fix that problem unless he buys a new PC!

reinstall windows.

The one step method, and I trust you have all your important work backed up on floppy's!

Or don't be a fucking retard, reinstall windows and if that doesn't work just buy a new hard drive.