I been trying to get hold of StarrSoft.com. Become of I had some PC problems. My license key did not work when I got my PC back from repair.
I need help with how to change how Windows 7 controls a serial COM1 port default settings. I use a very simple serial cable to control special external hardware with. The serial cable only uses the RTS, DTR and GND pins of the cable and does not require any special hardware drivers. I have used the device on several prior versions of Windows 95 through XP with no issues at all with the serial ports. With Windows 95-XP the serial COM1 port had RTS and DTR lines set 'off' by default. I just upgraded to a new computer with Windows 7 and now having an issue with the serial port.
![Serial keygen free Serial keygen free](https://z2.ziwus.com/uniden-bcd996p2-digital-display-mobile_ziwuscom_419SkEjF7GL.jpg)
For my issue, I need to have the serial port be 'off' by default until the control software loads and specifically opens the serial port to turn the external device 'on'. Using a serial port data tester (has lots of green and red led's) I can see that as soon as Windows 7 boots up, it automatically sets the serial port DTR, RTS and TD lines as 'HOT' (high voltage). This is not acceptable as it activates the external hardware before the control software is loaded! Likewise when the control software is closed and the serial port is released back to Windows 7, the serial port DTR, RTS and TD lines are again set as 'HOT' (high voltage) by Windows. Computer: Dell Optiplex 745 Windows 7 Pro 64 bit with SP1 installed Serial Port on motherboard: Intel ICH8/ICH8R LPC Interface Controller 2810 Serial Driver: Microsoft 6.1.7600.16385 (is up to date) Settings for COM1: - Baud Rate: 9600 Data Bits: 8 Parity: None Stop Bits: 1 Flow Control: None I have spent hours looking at Device Manager/port settings and trying to find anything online with no luck.
Is it possible that this is due to how Windows 7 plug-n-play handles the serial port? How can I disable this so the port is 'off' by default like it was on XP and earlier versions of Windows? Thanks, Dave. I need help with how to change how Windows 7 controls a serial COM1 port default settings. I use a very simple serial cable to control special external hardware with.
The serial cable only uses the RTS, DTR and GND pins of the cable and does not require any special hardware drivers. I have used the device on several prior versions of Windows 95 through XP with no issues at all with the serial ports. With Windows 95-XP the serial COM1 port had RTS and DTR lines set 'off' by default. I just upgraded to a new computer with Windows 7 and now having an issue with the serial port. For my issue, I need to have the serial port be 'off' by default until the control software loads and specifically opens the serial port to turn the external device 'on'. Using a serial port data tester (has lots of green and red led's) I can see that as soon as Windows 7 boots up, it automatically sets the serial port DTR, RTS and TD lines as 'HOT' (high voltage).
This is not acceptable as it activates the external hardware before the control software is loaded! Likewise when the control software is closed and the serial port is released back to Windows 7, the serial port DTR, RTS and TD lines are again set as 'HOT' (high voltage) by Windows. Computer: Dell Optiplex 745 Windows 7 Pro 64 bit with SP1 installed Serial Port on motherboard: Intel ICH8/ICH8R LPC Interface Controller 2810 Serial Driver: Microsoft 6.1.7600.16385 (is up to date) Settings for COM1: - Baud Rate: 9600 Data Bits: 8 Parity: None Stop Bits: 1 Flow Control: None I have spent hours looking at Device Manager/port settings and trying to find anything online with no luck. Is it possible that this is due to how Windows 7 plug-n-play handles the serial port? How can I disable this so the port is 'off' by default like it was on XP and earlier versions of Windows?
Thanks, Dave Dave. I cannot believe that you haven't gotten an answer to this question. I was having the same problem as you when trying to control my radio interface.
I just switched to a Dell Optiplex over the weekend and noticed the same problem. I was searching the web for an answer when I found this post. I am happy to say that I found the fix for my Optiplex and how it works for you. I went into the BIOS and set the UART protection to On.
Doesn't make any sense to me because I'm a software guy, only an amateur on the hardware side. I exited the BIOS and serial port is working as it should just like under XP.