USB ports error code 19

Hi,

Code 19 means there is a driver conflict such as two devices trying to use the same resources.

Do these to clear corruption and repair/replace damaged/missing system files.

Run DiskCleanup - Start - All Programs - Accessories - System Tools - Disk Cleanup

Start - type in Search box -  COMMAND   find at top of list -  RIGHT CLICK  -  RUN AS ADMIN

sfc /scannow

How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program
generates in Windows Vista cbs.log
http://support.microsoft.com/kb/928228


Then run checkdisk - schedule it to run at next start and then Apply OK your way out then restart.

How to Run Check Disk at Startup in Vista
http://www.vistax64.com/tutorials/67612-check-disk-chkdsk.html

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Then lets refresh the USB Stack

Control Panel - Device Manager - USB Serial Controllers - RIGHT CLICK on EVERYTHING and UNINSTALL
all except the category itself - REBOOT - this refreshes the drive and the USB stack

This KB shows the XP how to and the Vista method is identical
http://support.microsoft.com/kb/310575

USBDeview is a small utility that lists all USB devices that currently connected to your computer, as well as all USB devices that you previously used. Run it Options and check the 1st three choices to see if any are there.

http://www.nirsoft.net/utils/usb_devices_view.html

You would remove all instances of the problem hubs and/or devices  then reboot.

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If needed try both of these :

Tips for solving problems with USB devices - and a Mr Fixit
http://windowshelp.microsoft.com/Windows/en-US/Help/c39bd203-f729-47a4-8351-83291e13c8a81033.mspx#EGB

Hardware devices not detected or not working - Mr Fixit
http://support.microsoft.com/gp/hardware_device_problems

Hope this helps.

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Rob - Bicycle - Mark Twain said it right.