Okay guys, the situation has changed. I plugged in my old harddrive (which I had unplugged for various reasons) and booted up the new harddrive. This time, somehow, I DID get to Windows and managed to activate it.
However, it has some serious issues. The taskbar is going from the classic Windows XP style to the old style randomly, the system is slow and every time I start I get a couple of errors, like the Generic Host Process for Win32 Error. I think it has to do with the drive letter, but I'm not sure. Let me explain: basically, my old harddrive is the C:\ drive, it's 600 GB, full, which is why I bought the new 2TB harddrive. I formatted this harddrive and had to give it a letter, so it's called R:\. Now I cloned everything on C:\ to the R:\ drive using Symantec Ghost (version 15) and every time I now try to boot from R:\, I get these errors. The system is really unstable and I don't know how I can fix this. Should I change the drive letter to C:\ maybe? Or will that cause a clash between the two harddisks?
I'm out of ideas and need your help badly
reinstalling everything I have right now will take an incredibly long time and will be very tedious work, I'm really hoping that I can fix this normally! Any help is greatly appreciated!