I just closed my tablet for the night, but it wouldnt turn back on in the morning. I tried everything like hold for 30 seconds, hold the power and volume button, etc. but none of them worked. I don't want to wait too long, I have important data on it, and if I ship it to get it fixed that may take too long. Is there any way I can fix it without shipping it, or other power button/volume combination ??