Then try reverting/restoring your OS back to original release(not DP) then install the DP version again, I also had the same case as you do so many times before and I had installed the DP and original version over 5 times just to make it work properly, mine was worse I had the black screen of death, unresponsive screen, overheating, battery life is only 2-3 hours in normal use. DP os version usually has many issues with it soft reset, restoring the OS should fix the problem. Good luck
01-20-2015 08:53 AM