Sorry, I fixed it myself already. I ran Shellexview, as instructed in this thread
, and I discovered that dropbox was running havoc on my system.
Thanks for the quick reply nontheless, but it appears to be fixed now.
Edit: it isn't fixed. I thought is was since it stopped crashing, but it's failing me again.
I have run sfc /scannow, and the results are in the attachment. That's all I know, if you need more information, please explain what you need and how I can get it.