com port seems blocked

Hewlett-packard Hp laserjet p2055dn - pr...
April 30, 2013 at 15:44:40
Specs: Windows XP sp3, enuf
I am trying to use an opticon 2001 handheld scanner with my machine. It did work for a few months, I use it daily. Now it has stopped working on my Win 7 64 bit pro machine. It still works on my Windows XP 32 bit pro machine. It can see that it is connected in the device manager, I downloaded and installed the latest 64 bit drivers successfully. I downloaded a companion program from the opticon site. It allows direct reads and writes to the scanner. It keeps saying "error opening com port". It can see the correct com port that the scanner is connected to. I know this is true since it displays the COM port in the companion program when it shoots the error. If I go to the control panel and manually change the com port and restart the companion program it still shoots the error but displays the new COM port that I assigned.

As far as I can tell the PC is Virus and Spyware free (Microsoft security essentials / Spybot S&D / Malware bytes) and I went ahead and uninstalled all of the software that was installed since the problem occurred, which really wasn't much. I think 3 apps. Someone suggested the firewall may be the issue, which didn't make sense to me, but after disabling and restarting it still wasn't the issue. I feel like the virtual COM port is locked somehow. Any ideas?


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#1
April 30, 2013 at 16:22:06
Could be worth System Restore back to before you had the problem. You will not lose your own stuff. As you have now uninstalled software you need to go back to before any of that was installed.

Always pop back and let us know the outcome - thanks


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#2
April 30, 2013 at 17:16:08
system restore was disabled. I should have mentioned that I did check and its not an option. Any more ideas? Thanks!

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#3
May 1, 2013 at 01:07:14

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#4
May 1, 2013 at 05:32:40
Usually, this problem is caused by a conflict with recently added software or operating-system updates. You can fix this problem by updating the problem port's driver

Sometimes, for no apparent reason, computer ports simply stop working or start to turn themselves on and off.



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#5
May 1, 2013 at 16:53:17
Ok, interesting. The COM ports are virtual usb drivers and is stated in my original post I ensured I went to the manufacturers website and got the latest drivers for my hardware. Since the COM port is virtual wouldn't the driver for the hardware include that? Thanks for your help. Let me know if I am looking from the wring angle.

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