My T400 series tablet will not start up.
If your T408 or T410 tablet appears to have power (charging LED turns on when charging) but the screen remains dark when attempting to turn it on, try the following steps to return your tablet to normal functionality:
NOTE: Be sure your tablet has been charged for at least 3 hours before going further.
1.) First try to power reset your device by pressing and holding the power button for 10 seconds.
2.) If the reset doesn't appear to change anything, press and hold the volume up button (keep holding), then press and hold the power button at the same time. Keep holding both buttons. The Cruz logo will appear, you may then release the buttons. You should then see the Android robot with a triangle and exclamation point over his head.
3.) The moment you see the Android robot, you will need to access the System Recovery menu by pressing and holding the Power button, then tap the volume up button once, releasing both.
4.) In the System Recovery menu, the first option in the menu (Restart tablet) will already be selected. Use the power button to activate this selection. The tablet should start normally.