This air can be enough to cause the fluid to foam and your pump to whine. Another possible source of air being introduced into your power steering pump is actually by a lack of power steering fluid. If there is a lack of fluid in your power steering system the fluid reservoir will get low.
Some of our clients use the MAC connector to connect to our vWorkspace VDI environment. We have setup a screensaver that locks the screen after some minutes. On a windows PC, the user can press CTRL-ALT-END to unlock the screen. However, on MAC's without the END button, users can't get out of this unlock screen. We have tried different combinations, but nothing seems to work.
The option which you are referring to, is for Menu Bar. You can open menu bar by pressing ALT in desktop version of IE 10. To permanently fix the Menu Bar on the screen, Right-click on the Menu Bar and select the option Menu Bar.