Before asking a technical question do the following:
Try to find an answer by searching the forum.
Try to find an answer by searching the Web.
Try to find an answer by reading the manual.
Try to find an answer by reading a FAQ.
Be precise and informative about your problem
Describe the symptoms of your problem or bug carefully and clearly.
Describe the environment in which it occurs (machine, OS, application, whatever). Provide your vendor's distribution and release level (e.g.: Windows XP SP1, Ubuntu 12.04 32bit, etc.).
Describe the research you did to try and understand the problem before you asked the question.
Describe the diagnostic steps you took to try and pin down the problem yourself before you asked the question.
Describe any possibly relevant recent changes in your computer or software configuration.
If at all possible, provide a way to reproduce the problem in a controlled environment.
Please visit the manufacturer's website to download the drivers for your device. You can use google to find the manufacturer's website if you do not know it. In the support section download the drivers for your specific make and model of the device for your version of Windows.
Note: If the manufacturer only lists drivers for Windows XP and not for Windows Vista or Windows 7, that means the device is unsupported or incompatible with the unlisted operating systems.
If you do NOT know the make & model of your device you can Search by Vendor / Device code as shown in device manager.
In the device manager, for the device you need driver for, Right click properties for the device, go in details for the device driver.
You will see a code like per example VEN_8086&DEV_27D8&SUBSYS...
The VEN code means vendor and the DEV code means device: in this case the vendor is 8086 and the device is 27D8.
Once you have the two codes, go to www.pcidatabase.com.
Enter the two codes and you should get the name of your hardware. From there you can search for a driver download for your hardware.