Just got a gift from a friend. A Panasonic CF48E. Put a new HD in it, Installed WIN XP pro, and was happy... NO sound.. Looking at the Control panell, looks like the Multimedia Audio Controller has a ( ! ) in the yellow circle. Downloaded what seems to be the correct drivers for it, ir starts to install but mid installation I get the Blue SOD, that says portcls.sys, and it shuts down, and restarts the laptop real fast ( no time to read what the blue screen says.. Anyone see that problem before? Any solutions? I read all kinds of suggestions, but none work. Help please.