Vista SP1 hasn't installed?

[J1mmy]

I had to uninstall SP1 about 2 months ago because it didn't allow the new hard drives which I installed to be detected. Upon uninstallation, everything was detected, along with a couple of other devices. As a result, I decided to leave it uninstalled for about a month.

Now, recently, I have been getting "Hosting processes and stopped responding and was closed....." and a few other errors. After research, it appeared that these problems may be fixed by SP1. So yesterday I reinstalled it, and it did it's thing. But when i booted up again, there was virtually no difference.

I still got one of those error messages, and I also noticed that 'Hibernate' wasn't there (which I believe was added to SP1)

Is there anyway to repair the installation at all? Or any way to check if any features that were included with only SP1 are there?