It probably won't appear in the Control Panel>Programmes and Features so can't be uninstalled from there. It may also not even show in Programme Files or Programme Data but they are in your Application Data folders - your own and AllUsers.
Press the Windows key and R together and type in regedit then press Enter. From the File menu, select Export then note the name and location of the backup you're creating in case anything goes wrong. Then navigate to H_KEY_LOCAL_MACHINE\Software and scroll through the list deleting the junk entries. Look at the Microsoft entry and find Shared Tools. Under msconfig, delete anything that starts automatically when the machine is powered up that you don't need to start. Do the same in Windows\Current Version\Run.
Collapse the hive then go into H_KEY_CURRENT_USER and repeat the process. When you finish, leave the Registry from the File>Exit menu and restart the computer - twice.
Then you need to clean out the Application data folder under C:\Users\{yourname} and remove the folders that correspond with the threats you found in the Registry and want to remove, along with any others. Pay particular attention to the Temp folder, deleting as much as it allows you to; the remainder is necessary for Microsoft's purposes.
I hope you find it and kill it off. A shortcut to some of the above will be to findit again in Task manager, right click it and click on "Go to file location" or similar.