My system came with Windows Vista business install on D partition. My friends told me about windows 7 and I decided to check it out. Since I installed it on my laptop, the caliberation of my battery dropped and the battery life also dropped from about 2.5hrs to about 45mins.
I thought this was because of the graphics on Windows 7. Now I want to change back to windows vista.
NB: I installed windows 7 directly into C drive without touching D drive at all. How can I reinstall my Vista from D drive?