Dell Precision Workstation AIO 5720

The Dell Precision Workstation AIO 5720 looks good and at first I was impressed. However, there is no height adjustment in the stand, so you will need a stack of books under the stand if you want it higher. The web cam is poor and at the base of the screen you get an upwards view of your chin but not your face. The touch screen is glossy and like a mirror reflecting light into your eyes. But fundamentally the problem is that it buzzes when the brightness is less than 100%. Dell recognise there is a problem and their site engineer has replaced the speakers and mother board but that has not fixed it and even though it’s under warranty Dell are refusing to replace the pc. I believe this buzz is a design fault. A problem that was first associated with lap tops. It could be the coil winder but that would mean replacing the screen! Effectively this means all the parts are having to be changed to fix this design fault or basically I have to live with a buzz! Now the web cam recognition does not work. Dell are simply not interested in fixing the problem or replacing this defective PC.