A:AnswerThere are indeed 2 onboard speakers on this model. I am having issues with my speakers now as well, very similar to your issues. The on board speakers used to work perfectly fine a few years ago, now they don't. I have tried all the basics to get them functioning and nothing yet.
A:AnswerVertical orientation would only work if your graphics card rotates images and you are using a mounting bracket. The included stand only attaches for horizontal viewing.
And viewing angles refer to your angle (side to side & above) from the monitor. Think sharing your screen with an audience.
A:AnswerIf you are running it with HDMI connection, switch to DVI. It sounds crazy but it makes a world of difference in the image quality. I had the same issues you had til I made the swtich.
A:AnswerAcer - 27" LED HD Monitor, good quality picture for the money. I got one on sale at Best Buy for $199. Full HD, LED Monitor, Model: S271HL. The 27" LG Model: 27MP33 is also good but is more money, about $249 also at Best Buy.