My friend brought me an Acer A500 tablet, and told me that something was wrong with it. Unfortunately he didn't have much other than that to tell me. The tablet would not boot past the ACER boot screen, so I figured I'd reinstall the OS. I had download such files, and flashed it using the stock recovery, and all seemed well. HOWEVER, as reaching the end of the flashing screen, it froze and would no longer proceed. I decided to restart it, and retry and try multiple other files. I'm confused on what to do. If anyone has any advice, please, leave a post.