COM port 1 not working

[Basil]

I have a Gigabyte Z97X Gaming 3 motherboard with an on board header for a true serial port, running Win 7 64 bit Pro. This has worked fine connected to a back panel socket for years but now it no longer works. I also have a card in this PC with 4 additional true serial ports. and these work fine. I need to pull out the tower case and check the connector to the MB header hasn't come off, but I have my doubts that this would cause this problem as I see this in Device Manager (below). Would anyone be able to please advise as whether the MB has an issue in itself? I have checked the port is enabled in the BIOS and it is, and I have tried disabling and re-enabling to no effect. At the moment nothing is connected to COM1 on the back panel, but when it was it appeared to be no workie Thanks.


Screen grab of Device Manager here: http://www.chriswilson.tv/port.jpg

 

[samuria]

Often there is a conflict of irq or dma on com ports so worth checking there is no conflicts

 

[Basil]

Thanks, I did remember conflicts from my DOS days and I see this, but whether I am checking correctly or adequately I am not sure. I appreciate your very fast reply!


http://www.chriswilson.tv/port2.jpg