Monitor fails to connect to Dell Inspiron 3650 desktop: motherboard failure
I have a Dell Inspiron 3650 desktop running Windows 10 Home.. It no longer connects to a monitor with the monitor displaying “No connection”.
I am pretty sure the problem is the monitor port rather than my monitors or monitor cables. I have tested the 3650 with 2 monitors and 2 monitor cables that a) previously worked with the 3650 and still work with a Dell T7910 workstation.
Also to begin with I only occasionally lost monitor connection. I could reconnect by jiggling the cable/monitor in the port connection. Eventually, this stopped working.
I have opened the PC and everything seems attached and clean with no signs of damaged components. It still powers up. I do not know if it boots into Windows as I have not monitor connection.
I remember earlier Dells had 4 lights that indicated errors (all green OK, combinations of green and orange, various kinds of errors). Do the latest desktops lack this feature.
I have also changed the battery to no effect.
I have a video card but my understanding is that even if this card is malfunctioning, the monitor should still connect to the PC. Am I right?
My conclusion is that the monitor port is malfunctioning. In consequence, my only solution is to buy a new motherboard.(I do not want to be soldering a monitor port to a motherboard.) Am I right?
I say ‘new motherboard’ because I worry how much life might be left in a used/refurbished one. I plan buying a new motherboard on eBay
My thanks in advance for your thoughts, suggestions and kind help