My Nexus 10 has been acting up recently...the battery seemed to be draining A LOT quicker then it normally would.....the tablet would just shutdown in the middle of doing something. Fast forward a week or two, now when I turn it on it vibrates for a second, shows the "GOOGLE" logo and starts the boot animation for 4.4, vibrates and repeats the same. I manually formatted and flashed 4.4 (fastboot flash boot ...etc...) and still am getting the same issues...Any suggestions on what to try next?