How to enable disk controller in bios windows 7

IF you are trying to install a hard copy of windows vista/windows 7 like me on a dell lab top and desktop computer. Here is what you are going to have to do. You can not enable the disk controller in your bios, It is more than likely blocked. Start your computer and hit f2 until the bios comes up. Under advanced setting in your bios change your Sata from AHCI to compatibility mode. That is it. Then restart your computer hit the f12 button and boot from disk.

Or Best Way, bacup your existed data and Delete all existed partetation and create new one, so problum will solved.

I hope it helpful to save your time, it took me a while to figure this out.

Good Luck