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Thread: Serial Port issues, can someone help?

  1. #1
    Who am I? HiJackZX1's Avatar
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    Serial Port issues, can someone help?

    I just got done doing a reinstall of Windows. I am now installing all the devices back in, but I am having major issues with my serial ports. I attach XM, HD Radio, OBD scanner, and AMPCTRL, which are all serial and they work off and on, but most of the time they dont. Maybe i have to flash my MoBo? When I connect XM it installs as a serial mouse, so I go to device manager and disable it, then restart and XM should work, but it does nothing. HD does the same also installs as a serial mouse which is disabled. I then go to Mitch's app and open it and it says no radio detected, but I hear the radio clicking. The OBD just seems to work when ever. The AMPCTRL seems to work perfectly though.
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  2. #2
    Fusion Brain Creator 2k1Toaster's Avatar
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    You have 4 independant serial ports? Maybe time for a USB switchover...
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  3. #3
    Who am I? HiJackZX1's Avatar
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    Quote Originally Posted by 2k1Toaster View Post
    You have 4 independant serial ports? Maybe time for a USB switchover...
    I dont know if they are independant.... There are 2 in the back of the MoBo, then 2 on the motherboard via header connectors. It doesnt make sense why they worked before the restore and now I have issues.

    PS: I did replace my USB PCI card with a new one, but that wouldnt cause issues would it?
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  4. #4
    Variable Bitrate FPeter's Avatar
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    check the COM-number of them in device manager. when my USB GPS went automatically to COM15-20, the sw's are unable to connect it - i could select this number, but did not work. when i set it under 10, then it worked...
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  5. #5
    Who am I? HiJackZX1's Avatar
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    I think this may be happening to me also. I uninstalled all the serial ports then unplugged all devices that use a com port. i then restarted and it installs the serial ports back to their original number, which is 1-4. I then tested with HD and XM, and it worked. So I then changed HD to 15, XM to 20 and left the OBD2 scanner at 3. All worked perfectly. I then decided to change it from 3 to 15 and all my headaches started again. So now i have to uninstall that one serial port then leave it at 3. Thing is my BT stack is also on 3 so i will just have to uninstall that.... and reinstall.
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