New
#11
Have you looked at what came preinstalled from the factory? You might have a ton of useless bloatware applications wreaking havoc with your system. Last night I spent over an hour removing bloat from a Compaq Presario for nearly the same problems you reported. Before you return it or do anything else, see what's installed and report back - we can probably give you some pointers on what is safe to remove, which might solve your problem.