Lenovo G50-80 Windows 7 x86 Installation problem

Hey guys i own a Lenovo G50-80 with some modified specs ( removed DVD-Writer and put a SSD as main drive and change single channel 8GB Ramaxel with dual channel Kingston Ram )
I'm a cellphone technician and some of drivers and applications doesnt support X64 windows and windows 8 or 10 so i decide to install Windows 7 x86 as a secondary OS (Dual boot)
but at the beginning of installation windows 7 installer doesnt detect my HDD nor SSD and shows a message that driver needed
i have disabled AHCI an use IDE and it doesn't correct
using legacy bios and the same result
what should i do?

ThrashZone said:

Hi and welcome to SevenForums,
AHCI is best to leave activated it should be the default setting,

What makes you think your system is capable of using dual channel ram ?
How did you come up with that upgrade ?

Either way did you prep the ssd for clean install usually you wouldn't need to but it's good to clean it anyway
SSD - Install and Transfer the Operating System

Prepare the SSD – You first have to initialize the SSD to create the MBR. You can do that with Disk Management or with this program (which you will need later anyhow).

Then you need to align the SSD and define an active partition on it. You use an elevated Command Prompt with the following commands:

Diskpart
List disk
Select disk n (where n is the number that was given for your SSD in List disk)
Clean
Create partition primary align=1024
Format fs=ntfs quick
Active (assuming you want to install an OS)
Exit

Thanks for your reply but non of them was the solution
after installing windows 7 on my HDD with a PC (not my laptop) non of USB port works so i guess the problem is Intel eXtensible USB controller
both USB2.0 ports and USB3.0 port controlled by same controller and windows 7 doesn't have a generic driver to pass installation section
so the solution is to put drivers of Intel eXtensibe USB controller to one of the drives and when installer asked for drivers browse it
and for your hint about dual channel ram
in single channel mode read benchmark was 11000MB and after dual channel 21000MB and about 4-5 FPS increase in games.
doesn't it fair?

Guys my problem has solved by myself and the solution is explained in my second post for whom may have my condition
Thanks all

essenbe said:

emprazol, did I understand that you installed the OS on another computer then put it in the Laptop? If that is what you did, you are not going to have it run the best it can do. As far as the drivers, Windows 7 supports USB 2.0 natively. You have to install drivers for USB 3.0, but that can be done after the install. You should also use AHCI mode when installing. There is some problem if your Laptop cannot see the SSD. Either it is not connected properly, you have a bad cable connection or you have a bad SSD. Check your BIOS and make sure it is set to AHCI mode. The only reason it should ask for drivers before the install is if it is part of a raid array or you have a bad installation disk. Windows 7 has native AHCI drivers, it doesn't need them installed before the install. There is no i core CPU that I am aware of that cannot run dual channel mode and should be run that way.

Where did you get your installation media? If you got it through a Torrent or some other means besides Microsoft, that is most likely most of your problem.

Thanks for guide
as i said before there is only one USB controller on this laptop model and its not detectable by windows 7 cause its USB V3.0
some laptops may pass this level with changing Bootable USB to Black ones (V2.0) not Blue ones (V3.0)
but this model doesnt have separate USB controller for V2.0 and its controlled by same controller of V3.0 ( Intel eXtensibe )