Unhappy [HELP] Does not work my recovery mod

I have videocon A15 rooted phone with Android 2.3.6(Gingerbread), Rom 512 mb,Ram 256 mb.I successfully rooted my phone via eroot.My problem is, doesn't work clockwork recovery (volume down power button) mod, but this method work perfectly before when I don't update clockwork mod CWM version & via Mobile uncle tool.
When i face this problem i don't go to recovery mod via mobile uncle tool, rom manager, flashify,(reboot into recovery) or volume down power button, all those methods are not working, also factory data reset not working in settings menu.Its only shows videocon logo (hang), then i removed battery & switched on.
Now what I will do,Please help me.