XPS 501X Running Window 8.1

Hi

I upgraded my XPS501X laptop to Windows 8 without realising that the software had not been tested on the laptop. Have had numerous problems with it since. Did read a blog post about reinstalling the drivers in the right order to fix issues with it. Is there a guide on this?

Currently having issues with:

1. Intel Turbo boost-not working;
2. Bluetooth not working-even though I have the latest driver/version installed;
3. Webcam central does not work;
4. Nokia software for a Windows 8 phone does not work/recognise phone when plugged in via cable, and of course cannot access via bluetooth.
5. Also have Nikon camera software installed and the NKmc2.dll error comes (it's a Nikon message centre file)

There may be other problems but these are apparent and causing problems. Any advice?