[Q] [HELP] My Samsung Galaxy S3 wouldn't load topic

I rooted my S3, flashed CWM and installed CM 10.2. There are no problems at first. The next day my S3 suddenly reboots, then a screen telling than my device Encryption failed appears. afterwards, in the recovery boot, CWM shows all kinds of "E: couldn't mount". I can't do a factory reset, wipe cache partition or install zip, and I can't even move from the Samsung Galaxy SIII GT-I9300 screen everytime I boot my S3.

please help, thank you :')

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