how to update my graphics driver?  

mach04 said:

I think the easiest way to update the graphic cards drivers are from the Nvidia's homepage which also offers automatic detection of your driver. The same goes for Intel too. But I am not sure whether the drivers support in Arabic or Indian.

For Nvidia choose Option 2 which detects the driver automatically:
Drivers - Download NVIDIA Drivers

For Intel press the button that says "Check your system for the latest updates":
Intel® Driver Update Utility

At Intel, it also shows the drivers for your Intel chipset, soundcard, Wifi. If there is a new update for your Intel's products you can easily download them and then install them. Other drivers such as sound card and Wifi, I think it is better to go the producer's homepage and get the latest updates.

then i delete these programes ?

The Nvidia website doesn't offer region-specific support for you and sometimes the most compatible driver for your specific system is released by your system manufacturer (ACER). But you can try the Nvidia website drivers, it shouldn't be a problem. They are the most current, but there is a chance that they may not work optimally.

Also, you do not need to remove the old Nvidia drivers, but if you wanted to perform a 'clean' install of the drivers, sometimes this will help prevent problems arising from the system updating over the old drivers. Entirely up to you what you want to do here.

mach04 said:

You don't need to delete anything, the program you download it writes over the old driver. Just download the file and start the installation, at the end you need to restart the pc, thats all.

DustSailor said:

The Nvidia website doesn't offer region-specific support for you and sometimes the most compatible driver for your specific system is released by your system manufacturer (ACER). But you can try the Nvidia website drivers, it shouldn't be a problem. They are the most current, but there is a chance that they may not work optimally.

Also, you do not need to remove the old Nvidia drivers, but if you wanted to perform a 'clean' install of the drivers, sometimes this will help prevent problems arising from the system updating over the old drivers. Entirely up to you what you want to do here.

thank for helping me guys :)