If your touchscreen has stopped responding or feels inaccurate, you may need to reinstall the driver. KMDF HID Minidriver for Touch I2C Device Driver for Thomson
"I have to write a KMDF wrapper," I said, mostly to myself. "The standard HID mapping isn't parsing the multitouch reports correctly. The Silead chip is outputting proprietary packet structures." sileadinc.com kmdf hid minidriver for touch i2c device