Support idk what happened!! please help!

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http://androidforums.com – got home last night.. phone was off. though that was odd. tried to turn it on.. nothing. pulled battery put it back in, it came on. but would freeze then power off. left it off all night, powered back on this morning. worked fine for about 4 hours.. then froze again and cut off. only way it would turn on is if i did a battery pull. but would do the same exact thing! i was running froyocream rom. been trying to wipe/factory reset, but it just wont work. tried flashing the MT stock recovery. said it installed.. but when i power up.. its the same "Google" start up screen. tried to g (General)