1. Only laptop vendor give driver support. This mean, ASK HP for fresh display driver.
2. Since HP, Toshiba and other laptop vendors doesn't release fresh drivers, some guy at www.laptopvideo2go.com
(l-a-p-t-o-p-v-i-d-e-o-2-g-o) have made a mod's for "regular" drivers. So, just download fresh driver and get moded .inf file from lv2go site and install.
I have my 5600Go on ACER laptop and Im using this moded drivers without any problem.