Hi I am running on an HP with Intel Pentium (R) 4 CPU 2.80GHz x2 with 1GB memory 120GB Disk and unknown on-board graphics. I run Blender 2.69, Gimp2.6, Inkscape and a number of CAM and CAD programs. I recently purchased a Wacom Graphire4 CTE-640 6x8 USB pen and tablet. The pen worked pretty good after configuring in Gimp and worked OK in Blender, but in the Wacom Graphics Tablet app setup the Map Buttons had an empty field. I tried " BambooPT HOW TO " and some how messed something up. When I now go to the Wacom Graphics Tablet app it says "No tablet detected" and "Please plug in or turn on your Wacom tablet" when I do this the computer goes immediately into sleep mode and all I can do is turn off the machine and re start. If I boot up with the tablet plugged in, as soon as the desktop flashes up it goes into sleep mode. Any ideas? totally lost.