Why are my COM ports unavailable?

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Grafx

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Joined
Dec 5, 2001
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19
I just set up an MSI K7t266-Pro2-RU, Althlon 1800+, and Windows XP Pro. I have a 56k PCI Winmodem, a

SCSI controller card and a graphics card. When i tried to install a serial digital camera memory reader on one

of the COM ports, it reported that none were available. The modem takes up COM 3. What could be using

COM 1 and COM 2? Is there a BIOS setting that might be messing it up? Any way to force the modem to take

a normal COM 1 or 2? Where do you find in XP which devices are using the COM ports?
 
Joined
Jul 29, 2001
Messages
21,334
COM 1 & 2 are your external COM ports. If your modem is on COM 3 it is using the COM1 IRQ. GO into the BIOS and see if both of your exteranl COM ports are enabled.
 

Grafx

Thread Starter
Joined
Dec 5, 2001
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19
I checked the BIOS and the ports were on AUTO. Changing them to the ususal interrupts for COM 1 2 still made them unavailable. Any way to check what is using the interrupts?
 
Joined
Jul 29, 2001
Messages
21,334
Look in device manager to see what ports are being used and what IRQ's they are using.
 
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