Boot in Safe Mode.
Switch System restore OFF, see how here.
In Windows Explorer, turn on "show all files and folders, including hidden and system". See how here.
Press Ctrl/Alt/Del simultaneously, select Taskmanager/Processes, select the process (if there), click "End Process" for:
MediaGateway.exe
Next, try to UNinstall anything to do with (not delete yet!):
C:\Program Files\Media Gateway\MediaGateway.exe
Next, run a HJT scan and (if still there) place a tick-mark in the little square before:
...................................................................................................
C:\Program Files\
Media Gateway\MediaGateway.exe
O4 - HKLM\..\Run: [Media Gateway] C:\Program Files\Media Gateway\MediaGateway.exe
O9 - Extra button: Help - {0660E1B2-82A0-46E7-BC66-8FBC5BD1DE23} -
http://www.comcast.net/memberservices/ (file missing) (HKCU)
O9 - Extra button: ComcastHSI - {359E0976-EBCF-4D34-A284-AB4D926E20A5} -
http://www.comcast.net (file missing) (HKCU)
O9 - Extra button: (no name) - {869EE607-5376-486d-8DAC-EDC8E239AD5F} - (no file) (HKCU)
O9 - Extra button: Support - {EC206FBD-172A-4ADB-999B-0A59EBE6E9B7} -
http://www.comcastsupport.com (file missing) (HKCU)
...................................................................................................
Now click on the
Fix Checked button in HJT.
When done, from between the above dotted lines, delete the highlighted
bold files.
When a \
directory-name\ is
bold, delete everything in it, including that directory itself.
Delete all files and directories from: C:\Documents and Settings\[username]\Local Settings\Temp
Repeat this for ALL [usernames].
Delete all files and directories from: C:\WINDOWS\Temp (except files dated from TODAY).
Boot normal. When all OK, switch System Restore back on.