Open up "Run". type in "Regedit"
Click on the "+" of "Hkey Local Machine" to open the folder.
Click on the "+" of "System" to open the folder.
Click on the "+" of "Current Control Set" to open the folder.
Click on the "+" of "Control" to open the folder.
Scan down the folder contents until you see "Session Manager"
Click on the "Session Manager" folder to open it.
On the right of the page it should show at the top "Default" then next down should be "BootExecute".
Double click on the word "BootExecute. This will open up a box showing all the annoying rubbish that is on your screen when you try to start up.
It should be highlighted. If not highlight it all, then right click and "Delete" it all.
Click on "OK" and close "Regedit".
Restart your computer and it should all now be gone.