Vista - Vista installation problem,, i need help ASAP

see when i do the steps u said till "After a few moments the Install Windows screen appears" i get this screen right away "the Vista license terms" and from there where i get the error message

So you dont get to the product key page ?.

ya,, after the "install now" i get the "license terms"

So you can get to this page and when you press next you get the error, is that correct ?.

no when i accept the terms i get the error in front of this page,, and this page is shadowed and no drives is shown..

When you say you "formatted" the drive how did you do that ?. And why did you fornat the drive, was it because you were getting problem's with it ?. Thank's.

see on the window "install now" i choosed "repair your computer" and then there is a screen showed "choose your operating system" and of course i didnt found any operating system there so i choosed "next", after that i choosed command prompt and from there i formatted my HDD...

I may be wrong but it look's to me like your HDD is the problem, (or at least a hardware issue), i wonder if anybody else might have a view on this ?.

Dont be too disappointed yet, i may be wrong about the HDD.