4 things to try (not sure what you have tried yet)
1) In CC either try to delete or disable those start-up entries.
2) In MSCONFIG, try unticking the entries.
3) In Regedit, do a Find on 'runonce' & for it and the one above it in the left column(which is Run), see if you can delete that key value(in the right side). Keep hitting F3 till all are found.
4) Reinstall the entry just so you can uninstall.
For extra measure you could try each of those steps in Safe Mode and/or with Run as Administrator.
Usual safety warning for Regedit; tread with caution !