This is a service which should have been disabled when the worker is installed. It would appear that it's still running, so you should go into the services management panel and stop the service and then set it's startup type to 'disabled'.
Or you can stop and disable it at the command line with the Microsoft service control utility 'sc'
(NOTE: the service name is UI<zero>Detect, not UI<oh>Detect)
sc stop UI0Detect
sc config UI0Detect start= disabled
The advantage to using the sc command line is that if you're logged in as a domain admin, you should be able to use sc to control services on remote machines, so you won't have to actually login to each and every worker in your farm.
To test this (if the remote machine is named VM-WIN7-X64):
sc \\VM-WIN7-X64 query UI0Detect
you should get something back like:
SERVICE_NAME: UI0Detect
TYPE : 110 WIN32_OWN_PROCESS (interactive)
STATE : 1 STOPPED
WIN32_EXIT_CODE : 1077 (0x435)
SERVICE_EXIT_CODE : 0 (0x0)
CHECKPOINT : 0x0
WAIT_HINT : 0x0
if you do, you can proceed with the service stop and disable commands.
sc \\VM-WIN7-X64 stop UI0Detect
sc \\VM-WIN7-X64 config UI0Detect start= disabled