Hello i'm trying to render a scene with 783 frames of animation with a few lights but i can't seem to get the render to fully complete the render. it will render maybe 20 or 30 frames before saying "render complete". i'm not even trying to render using mental ray(even then i still get the same results) just maya sofware production quilltiy. i try deleting my lights and switching different projects to see if its just this scene but its the same for all my projects. i try switching everything back to its default settings but nothing. my render time is even slower than it should be too. sometimes it will take minutes just to render a simple animation. i don't know whats going on, is it my computer? im still kind of new to computer/data text and i don't understand all that memory/cpu stuff either. i know my computer is pretty good considering its a 900$ acer and i only us it for is projects. it has a 12.0gb Ram and 1.80 of TB. i dont know how to look for ram when renderig or what to look for in general but any amount of help will grateful.

please help