My m240 Won't Turn On!!!

I have a m240. i exercise with my m240 because it has an armband. while i was running the m240 just went out. well, after my run, i turned it back on and it said the hold switch was on when it really wasnt. i replaced the battery and now the thing wont turn on at all or connect to my computer. Please Help!

Re-post, locking thread.