Driver Reviver simply scans your PC for outdated drivers and than automatically download and install the updated driver in your system, you simply have to give command and it does every thing automatically.
Driver Reviver scans their online database which they have partnered with many source websites and than simply picks the one which is compatible for your computer and downloads that right on your computer. So now you do not need to check for drivers manually, just buy this simple tool and make your PC upto date.
Driver reviver software is not available for free but well yes you can download it and scan your PC for checking out how many drivers are outdated on your computer. If you think the list is huge and you seriously need to update them, than you can purchase this for $10 or Rs.500 for 1 year package.