Please help !!!  

Not sure what the issue is, but if you give us the device model number I'm sure we can find the latest drivers.

Here's are some common places to find the latest drivers for your devices. If the link doesn't take you to the download center/driver center just look for a link to Support or Downloads.

Graphics/Chipsets
NVIDIA
ATI/AMD
Intel

Sound
Realtek
Creative

Wireless:
Broadcom
Linksys
Atheros

You can also use driver websites which contain all sorts of drivers, although I don't recommend using them unless they're reputable.

http://www.download.com/Device-Drive...-2014_4-0.html

Well when I view the Toshiba website, they don't have a listing for a Qosmio G50. They have a G45 and G55, but no G50. That may just be an oversight on their part. Here's the software for the G55, it may work.

http://cdgenp01.csd.toshiba.com/cont...C00251000B.exe

If you don't want to chance it, you can go to the Toshiba website and input your exact model number...

http://www.csd.toshiba.com/cgi-bin/t.../jsp/home.jsp#

Just changed the driver link, as Toshiba gives out different versions depending on the model I selected. You should really find out what your model number is and input it on their website as you may be installing the wrong drivers.

Now that I've mentioned that, if you wish to continue to ask for support on this forum you really need to fill in your system specs via your User CP.

Here's how:

Download Speccy from Piriform.com

Install the program and run it. It'll give you information about the different components in your computer including processor, operating system, graphics card, sound card and more.

Input each device into your system specs via your user cp.
Use this link to do so.

Be sure to provide as much detail as possible, for example, you should provide you entire computer model number that way people know exactly what computer you have. You should also provide your operating system beyond "Windows 7". For example, if you're using Windows 7 Home Premium 32-BIT, type in Win 7 HP x86 or W7 HP 32-BIT or Windows 7 Home Premium x86. You get the picture I assume. It's most important to provide the most detail you can regardless of what format it's in.