Remove Temp Files
1. Open 'Computer' from either your desktop or the 'Start' menu.
2. Open the 'C:' drive from the list.

3. Open the 'Temp' folder.
4. Press the 'Ctrl' and the 'A' keys on your keyboard, then press 'Delete.' When asked to confirm, click 'Yes.'
5. Attempt to install Transformers again.
Shutdown Idriver.exe
6. Press the 'Ctrl', 'Shift' and 'Esc' keys on your keyboard. This brings up the Task Manager.
7. Click 'Name' to sort processes by name. Select 'Idriver.exe' from the list.
8. Click the 'End Process' button. When asked to confirm, click 'Yes.'
9. Attempt to install Transformers again.