i have purchased Windows 7 home basic from shop, i have installed it in my desktop pc,
but now i have installed it in my laptop , but its telling while in online registration " the key is not valid",
but still i tried to activate throught phone, but its also not working out,
if i try through phone its telling 'sorry there seems to be some techinical error plz call back later'
please please please please ,,,,
help me , bcoz as im student, am in very much need in laptop to workout my college work,