Seriously, I am not kidding. This is the easiest one.
Gazzilion thanks to Rizone3 for creating this wonderful piece of freeware.
Download ‘Ownership’, a free and extremely small (300 KB) application at http://www.rizone3.com/archives/1271
Install it (just to bind it into your right click context menu) and you are good to go. (Right click on the problematic folder and choose Take Ownership).
For those who are not very clear about take ownership thingy, allow me to explain it briefly.
This thing normally happen when you shared some folders where other user or device (Upnp normally) has right to access those folders. Then you format your computer. When you want to remove or move or delete those folders, Windows will says you have no right to do that. WTF right, those are your folders. Silly windows :p, LMAOBBQSauceABCXXRay.
In order to overcome this problem, you have to take ownership of those folders back. There are numerous way to do this. But this one is one of the easiest (if not the easiest one) to do so.
Note to the creator: Thank you for saving me countless of hour. Great job Rizone3.