My samsung galaxy ace won't turn on! Help please?

[maisy]

I was on facebook on my phone and it wouldn't load - causing my phone to become rlly slow - so I turned it off (this usually works) and when I turned it back on again it won't go past a flashing samsung screen. I have taken the battery out and left it out then put it back in but my phone still won't work
I have heard u can do something too reboot the system, but I reaallyyy don't want to do that because I would loose all of my apps, memory and everything, which I need!!
Please help I really need my phone!

Thank you in advance xx

[Bob]

did you try hitting it with a hammer or stepping on it?

[Meeee]

awhh no D: keep trying and hoping and if it doesn't work, bring it to a store. They should be all too happy to help!

[Pete]

Chances are, you may have to factory reset your device. Unfortunately if it will not boot that means something has been corrupted. First try pulling the battery for a few seconds. Then try to boot it. If that does not work you'll have to boot into recovery and completely reset your phone.