I have intermittent trouble with video on an HP Compaq Elite 8300 SFF desktop. Some time ago, I installed a Radeon HD 7650a MXM graphics card, to improve performance and (I think) resolve some video problems I was experiencing at the time. I'm using an HP DisplayPort to HDMI adapter, and HDMI cable, to connect to a large display. This had been working well for a long time. More recently, I started having intermittent trouble, where I see a "no signal detected" message on the display. Oddly, if I also connect a spare display/monitor to the VGA port, I get the expected video signal on the large DisplayPort/HDMI display.
The PC is running Windows 10, patched to date, and has the latest BIOS firmware.
Any ideas?
The PC is running Windows 10, patched to date, and has the latest BIOS firmware.
Any ideas?