(SOLVED)I DID IT!. ASUS techs are useless. Don't bother calling them or Microsoft as I did both with no success.
Here's the fix. This is for ASUS TP500LA and maybe others. Get to CONTROL PANEL and Click on DEVICE MANAGER. Scroll or look down until you find SENSORS under sensors the first entry you see will say IVENSENSE SENSOR COLLECTION. This is the problem! You can't rollback the driver because that option is greyed out. Here's the work around to rolling back the driver: Double click on IVENSENSE SENSOR COLLECTION >Click on the DRIVER TAB>Click on UPDATE DRIVER>Click on BROWSE MY COMPUTER FOR DRIVER SOFTWARE>Click on LET ME PICK FROM A LIST OF DEVICE DRIVERS ON MY COMPUTER>2 drivers should show up >Choose the older one IVENSE SENSOR COLLECTIONS VERSION[4/9/2014]. ***MAKE SURE YOU SELECT THIS DRIVER AND NOT THE NEW 2015 DRIVER.** Click NEXT wait for the OLD driver to install and VOILA your problem is solved!