TROUBLESHOOTINGPage 28TROUBLESHOOTINGMost of the time your pen display tablet will work flawlessly. But if you are having trouble, Wacomrecommends you do the following:1. If the Wacom driver failed to load properly, first perform the recommended action in any errormessage that may appear on your screen. If that does not solve the problem, refer to thetroubleshooting procedures in this chapter.2. SeeDisplay Troubleshooting on page 29, or look in theTroubleshooting Tables on page 31.Your problem may be described there and you can try the solution offered.3. Open the Wacom pen display tablet Read Me file for late-breaking information.4. If you are having a compatibility conflict between the DTU-710 and a new hardware or softwareproduct, check if a newer pen tablet software driver is available. SeeObtaining Driver Downloadson page 38 for information on downloading an updated software driver. Wacom periodicallyupdates the software driver to maintain compatibility with new products.5. Check the FAQs (Frequently Asked Questions) on the Wacom web site for your region.6. If you have tried the suggestions in this manual and still cannot resolve the problem, then contactWacom for Technical Support. See the Read Me file for information on where to obtain support foryour region.TESTING THE DTU-710If the DTU-710 does not power up, check the following:• Verify that the cabling between the DTU-710 and your computer is correct. Be sure the poweradaptor is plugged into an active AC outlet and that it is connected to the DTU-710. Verify that anyother display connection(s) to your video card are correct.• Verify that the DTU-710 is powered on.• The DTU-710 power LED should light whenever the cabling is properly connected and theDTU-710 power switch is on. When the computer is turned on and a video signal is received, theDTU-710 display will activate and the power LED will glow blue.If there is no display, verify that your video card has been properly installed and is functional. If youhave another display that is compatible with your video card, you can connect that display to thecard in order to verify that the video card is operating correctly.TESTING THE PEN TABLET AND PENIf you cannot make a selection on the display screen with the pen:• Test the pen by pressing the pen tip or the eraser against the surface of the pen display tablet.The tablet status LED should light blue.• Now, without applying pressure to the pen tip but keeping it within 5 mm (0.2 inch) of the pendisplay tablet surface, press the side switch (when equipped). The status LED should again lightblue.If the status LED does not light blue for these tests, be sure you are using the correct pen that camewith your pen display tablet. Verify also that the USB cable is plugged in; the LED will not light if theUSB cable is not plugged into an active port. If you are still having problems, you may have a defectivepen or pen display tablet.