I didnt acitvate windows and now it wont let me into my computer unless i activated it, so i had called the number it said to and i read the lady the ID and she said it was invalid, so i had to re-install windows or send my pc back to its manufacturer (Dell), so I put in the cd and it didnt load, I had a black screen telling me i needed to recalibrate my battery, so is that why the cd wouldnt work ?? can anyone help me on how to resolve this issue, because i need to use my computer tommrow !!..(Im on my dads computer)