Sony Vio Ricoh memory stick controller error  

My Sony VGN-NW320f using windows 7 Pro Ricoh memory stick controller keep giving me an error every time I try to install a new USB device like, USB INTERNET hub, black playbook, any usb phone cant connect to desktop software. In the divice manager it says driver cannot verify the Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52). is there a way to get this fix as Sony is not much of a help!!!

hello jimbo45 i tried updating all the drivers from the sony support site and i still have the yellow error mark by the Ricoh memory stick controller. none of there update drivers worked.