communication Port Com1 error 9

February 9, 2012 at 10:19:03
Specs: Windows XP, 3gb
When I open device manager I find a yellow triangle with a ! on communication com port 1. I am a fraid if I uninstall it, I won't be able to find where/how to install it back correctly. Any safe way to accomplish this task? Thanks in advance


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#1
February 9, 2012 at 10:39:16
Right-click on the item and try and update the driver. If that doesn't work, go to the computer manufacturer's website (might help if you state what that is) and download the drivers for the chipset.

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#2
February 9, 2012 at 17:52:19
Just for info, it is usually safe to uninstall from Device Manager. It does not actually remove the software, so it finds it again on reboot. Sometimes just doing this can fix an issue. If not then you get the drivers as per #1.

[Long time no see Jennifer]

Always pop back and let us know the outcome - thanks


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#3
February 9, 2012 at 19:02:52
Have you installed Windows from scratch since the last time the Com port was working fine ?
If yes.....

XP doesn't have the drivers built in for most things that first came out after XP was first released, circa 2001, and it doesn't have some of the drivers built in for things made before that.

Whenever you load Windows from a regular Windows CD (or DVD) from scratch, after Setup is finished you must load the drivers for the mboard, particularly the main chipset drivers, in order for Windows to have the proper drivers for and information about your mboard hardware, including it's AGP or PCI-E, ACPI, USB 2.0 if it has it, and hard drive controller support. If you have a generic system and have the CD that came with the mboard, all the necessary drivers are on it. If you load drivers from the web, brand name system builders and mboard makers often DO NOT have the main chipset drivers listed in the downloads for your model - in that case you must go to the maker of the main chipset's web site, get the drivers, and load them.

Load the main chipset drivers for the mboard !


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Related Solutions

#4
February 9, 2012 at 21:17:38
In my XP Home Edition it shows that COM 1 driver details as being ---
C:\WINDOWS\System32\DRIVERS\serenum.sys
and
C:\WINDOWS\System32\DRIVERS\serial.sys

You could look in the DRIVERS folder to see if you have those two SYS
files. If you have them, then you could Update the COM 1 drivers to
have Windows look in that DRIVERS folder.

Those two SYS files were made by Microsoft.
I would guess they are related to the operation
of the Serial port.


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#5
February 9, 2012 at 22:48:01
I was able to go into Device Manager and right click the Communications Port(com1)....update driver....and use the Hardware update Wizard by choosing "Don't search I will choose the driver to install"....I highlighted the Communications Port....and it fixed it !!! Thanks so much guys.

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#6
February 9, 2012 at 23:05:46
NOW, create a NOTEPAD file, and name it something like "Windows XP".
Then make entries in it of how you fixed problems. Then you have a
future reference to any XP problems.

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#7
February 10, 2012 at 08:05:06
We're glad to hear you solved your problem.

Thanks for the thanks.


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#8
February 10, 2012 at 09:38:56
Took the advice and created a "Win XP" folder in My Documents and intered a note pad file on the fix instructions. Great idea Chuck2!

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#9
February 10, 2012 at 13:05:09
Good News. Thanks for popping back to let us know the outcome.


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