So I just bought a nexus 7 off of amazon(used). When I first turned it on, I got the google logo, and it stayed on until I held the power button. It then was blank, and then the google logo showed for about 10 seconds, and then it goes blank, 10 seconds, then blank, ect. unless I go into the bootloader.(it might be worth mentioning that the little unlocked lock icon appears under the google logo.) After I got into the bootloader, I shut the device down and waited for a while(maybe 15 minutes). Then i tried to reboot, and it successfully booted. However, before i could get into the settings to check what version of android it was running, it reboot and got stuck at the google logo again. Is it possible to fix this, or is there a hardware problem? Thanks.