when asking for help you should include make model and what driver you need. no part of a pc is called "base system".
here is the sony support site rivers_software:esup" rel="nofollow" target="_blank">http://esupport.sony.com/perl/select-system.pl?DIRECTOR...
just click on the type of device / make model and for free you can down load the drivers
if you right click on my computer and select "manage" > then click on device manager> you will see yellow question marks next to devices those are the ones you need drivers for