If the ConnectMultiplePorts registry key is set to 1, USB devices may not work on the system. Also, the following errors can be displayed by the System event Log:

• Service Control Management, ID=7009, Timeout (30000 ms) waiting for Elo TouchScreen Service Activation
• Mouclass, ID=9, Impossible to activate interrupts on \Device\PointerClass0

This can be corrected by running regedit and changing the following registry key from 1 to 0:

1. HKEY_Local_Machine
1. System
1. CurrentControlSet
1. Services
1. Mouclass
1. Parameters
1. ConnectMultiplePorts

Double-click the ConnectMultiplePorts text to edit the value, then close the registry editor and reboot the system.