Water pumps aren't that hard to replace. Start off with getting jack stands and a good Chilton's manual. They have step by step instructions. But it's basically drain your system. And undo the bolts that hold it in u might have to lift over other parts of the engine to get it out. When putting new one in not too much gasket sealeant or u could gum up new pump and tighten bolts to feet per pounds required and not too tight as you could crack your pump
Hold the power button and the volume button does a hard reset. I have the freeze up issue with my rca voyager III and hard reset it acts up a couple more times then its fine. Try this before u factory reset. Because factory reset isnt always the answer.