I have a Clamshell that was working perfectly, but I decided to put in a few upgrades. I added a new 120gb hard drive and 512mb of memory and the upgrading process seemed to be going very smoothly. However, when I put the Clamshell all back together and booted it up the keyboard caps and num lock lights turn on but the keyboard does not work, and the trackpad also stopped working. Really need some help on this one.