Computerhilfen.com: Comp Crash, Cant Access harddrive anymore

Hello

I just had an major comp crash. Wasnt a virus (http://www.computerhilfen.de/fachbegriffe-v-Virus.html) for sure, but my Reg Defrag somehow f***ed it up. Luckily i just made an Image two days before with Acronis. But as i didnt had any empty CD i couldn`t do a Bootdisc.

So here is what i did. I first run Windows (http://www.computerhilfen.de/fachbegriffe-w-Windows.html) setup, formatted drive C, installed windows (http://www.computerhilfen.de/fachbegriffe-w-Windows.html) new, right after launched Acronis put the image back and everything seems fine. But, and here is the problem

After my reinstall of Windows (http://www.computerhilfen.de/fachbegriffe-w-Windows.html) (the problem occured even before using Acronis). I cant access my C or D drive using My Comp anymore (C: and D: is one disc). And always get the message "Access denied". My E (second harddrive) has no problems.
But besides this i can access C and D using e.g Speedcommander or other Explorers, without any problems. Also all my programms stored on C and D open and run without any problems. But as soon as I want to open C or D using My Comp, i cant get access.
Also when i use a shortcut e.g Documents (which folder is on D), Windows (http://www.computerhilfen.de/fachbegriffe-w-Windows.html) explorer opens the folder without any problem.
But when i open My Comp, and try to double-click on D, i get "Access denied". And when i use My Comp and use the Scrolldown menu to go to drive D it goes there straight away. Also no problem.
Why i cant get access anymore by clicking on the D or C drive icon (http://www.computerhilfen.de/fachbegriffe-i-Icon.html) in My Comp. Every other method works just fine.
What should i do?

Thanks for every advice


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edit: deleted email address in text to protect you from spam :)

It seems that you have wrong permission / ownership settings on your harddrive. Try this: Start the computer (http://www.computerhilfen.de/fachbegriffe-c-Computer.html) in safe mode as administrator and changee the ownership settings of the harddrive and/or its folders.

How:
http://support.microsoft.com/default.aspx?scid=kb;en-us;308421&Product=winxp

tried it, couple of times. forward and backwards. didnt help.
sometimes i even get the message "Access denied" after running through the whole file changing.
but even when it runs through, i still have the same problem.
:(

Which folders are not accessible anymore? Maybe it would help to copy the data with a bootdisk (or knoppix) to a working partition and formatting the other one?

Its C and D. The first folder when u open My Computer.

But its not that they dont "really" work. When i directly click on them in My Comp, it get "Access denied"
When i use the Scrolldown-menu in My Computer, i can access them without a problem, as with any other Explorer e.g Speedcommander, Totalcommander,....

Its really wired. And i dont find the clue why and how this happened. But it must be connected with my Registry clean and install of Acronis. Cuz on my other machine, i also installed Acronis, made a registry clean after, and the same thing happened.