Problem reformatting emachines laptop (advice needed)

[Hoggy]

Hi,All

I just bought an emachines e625 laptop and i,m trying to reformat using windows 7 ultimate but for some reason it seems to be taking forever,I have reformatted pcs before and usually it doesnt take that long usually about 30 mins,As anybody come across this problem before or as any idea what could be causing it,

Any advice is greatly appreciated

Specs of the laptop are 1,6ghz processor,1gb of ram,and 80gb hard drive

Original o/s was vista basic

Ta