After examining the problem, I found that it said: msahci.sys is corrupt. I used the steps here of the second post to replace the file: http://social.technet.microsoft.com/Forums/en/itprovistasetup/thread/28388d36-ecbc-4264-995c-b65a862a81a3. It worked and my computer did start up properly. The problem was afterwards that the file seems to get corrupt everytime I restart the computer. The biggest changes I did previous of the problem is disabling some services. I dont remember exactly which one I disabled, but is there some service that affects msahci.sys specifically?

Hi Kaze105 I think that the cleanest and easiest way to "reverse" what has been done is to use Safe Mode and then System Restore. This should enable you to get back to earlier settings before you disabled some of the services. Once you have your system stable again you can rethink your strategy Hope that this helps, Rgds PatThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

You can try to boot in Last Known Good ConfigurationPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.