Windows 7: 'Fn+f6'/'Fn+f5'not functioning proper in Win-7 HomePremium 32bit.

Hi Guys!I will be very thankful to you if u can solve my recently faced problem.I am using a SONY VAIO VGN-CS36GJ,which was initially provided with Windows Vista Home Premium(64bit).Recently i have installed Windows 7 Home Premium (32-bit) OS.I have download and installed all the required drivers for my Model from Sonyasia.com
Everything is working fine exept that 'Fn+f6' i.e 'Brightness increase' and 'Fn+f5' i.e 'Brightness decrease' keys are not functioning properly.It only goes up and down by one bar.And my screen is constantly at its full brightness condition.
Furthermore my 'Windows mobility center' is also not showing any 'Display-Brightness' option from where i can increase/decrease the brightness.Please help me out.Thanks in advance!

Hi MeJoy, Welcome to the forums , have a look at these links http://www.vaio-link.com/os/vista/64bit/ and this ftp://ftp.vaio-link.com/PUB/VAIO/WIN7UPGRADE/ you may find the drivers you require

Thanks very much for providing the link for downloading drivers.But actually i don't know which is the driver that i need to download especially to solve my problem mentioned previously.Prior to mentioning you my problem,I had downloaded and installed all drivers that was given in the Sony asia website for my model.But when the problem arrived i contacted your website.Therefore,please tell me the particular driver's name.Thanks again!

Hi MeJoy, the file you need is " 7upg Vaio control centre " version 2.2 or version 4.0 , It's in the form of a Zip file , download and extract to the desktop and install from there

The solution that you had suggested i.e to download and install '7upg Vaio Control Centre 2.2' didn't solve my problem which was 'Fn+f6 i.e Brightness increase/decrease not working properly(Only goes up/down by one bar)in Windows-7 Home Premium 32-bit & also Windows Mobility Centre not showing any Display Brightness option'.
In regards i wan't to tell that one of the member of this site was having the same problem as me and he was told to upgrade his graphics card driver form 'http://www.sony.com.au/support/download/355210/product/vgn-cs36gj' and his problem was solved.The link is for 64-bit Wndows-7 Home Premium.
Please provide me a similar link for 'Windows-7 Home Premium 32-bit'.Thanks!

Hi MeJoy, in the link I posted are 13 graphic drivers for intel and ati
if you would be so kind and tell me if you have the Intel or Ati graphic card in your laptop I will tell you which driver to download

My Graphics Card Details are as follows:
"NVIDIA GeForce 9300M GS"
Actually the driver i need to upgrade is situated in"www.sony.com.au/support/download/355210/product/vgn-cs36gj" but its for the 64-bit O.S.
I had searched there for the 32-bit version but didn't find it.If u can make a search on behalf of me and provide me the link,then i will be very thankfull to you.Thanks!

MeJoy, I think this is the driver you require Windows 7 Upgrade NVIDIA Graphics Driver Upgrade Version 8.15.11.8640 : Sony Australia