I just want to add what happend to me. Same as all of you my tablet didn't seem to charge. I tried everything above and nothing. (well, i tried the couple ones that i did read until this "idea" occurred to me). What i did was simple and it worked. I simply just blew into the charger and into the tablet and pow!! it said "charging". Idk if this will fix your problem, I hope it does, but it fixed mine. Just giving my 2 cents.