Solution:

This symthom is caused by software bug of ELO touchscreen driver. The content of regedit will be changed after serval times power ON/OFF action. Elo announced that they will fix this bug and give us a new driver in July. We have a sloution for this quesiton. Please refer to the following setps to modify associated values of registry. 1. Run Regedt32. 2. Select "Hkey_Local_Machine"--->"System"-->"CurrentControl"--->"Services"-->"Monmouse"-- ->"Parameter" 3. Modify the items in right windows. Comport:0x4 ComtollAddress:0x2e8 ControllerLevel:0x5 ControllerVector:0x5 (Keypoint and sloution)