I have a Sony VAIO computer with Windows XP Media Center software. When I recently changed from Brighthouse to AT&T Uverse I had to stop using software to decode the TV channels and begin using a video box from AT&T (with the computer tuned to channel 3). It works fine for most channels, but there are several channels I cannot view because the monitor turns blue after a few seconds of watching that channel. I noticed it primarily happens to premium channels such as HBO (both standard definition and high definition), but the system works for SHO high definition, but not standard definition. Likewise, I can get high definition NBC, but not standard definition NBC. I know it is not the Uverse decoder box because all channels work when I hook the cable to a regular TV. I was wondering if the software on the Sony is inspecting the content and blocking it out because it thinks it is not legal, because I cannot view recorded programs or live broadcasts from these channels. Has anyone else had this issue? Is there a fix?