Try checking on properties of the video card. Most of cards support such feature.
The page that displays the icons when you turn your computer on is called your home screen. Some people do call it the main screen as well.
There is no such button. Nor is there any need for such a button. The computer screen refreshes itself automatically depending on the chosen screen refresh rate (typically 60 Hz which is 60 refreshes per second). You are probably referring to the desktop. This is not "the computer screen", it is a window controlled by the operating system's "shell" program. In Microsoft Windows, the default shell program is Windows Explorer, which provides the desktop window and task bar window in addition to file navigation windows. When the desktop window is the currently active window, the F5 key will force the desktop to refresh. However, this is not the same as refreshing "the computer screen" because any other (non-active) windows that are currently open on the desktop will not be refreshed. You have to select each window in turn to activate it and then refresh its content using the appropriate keystroke (if one is actually provided by the application). F5 will refresh any active Windows Explorer window but you cannot guarantee it will serve the same purpose in other applications. For example, when Microsoft Word is active, the F5 key will open the Microsoft Word 'Find and Replace' dialogue. But if Microsoft Excel is active, the F5 key will open the Microsoft Excel 'Go To' dialogue instead. However, most Windows web browsers (e.g., Chrome, Firefox, Edge and Internet Explorer) will react to the F5 key, forcing a reload/refresh of the current page.
PRV
Turn the multipliers upside down !
By locating the thermostat and turning it down
In the upper right hand corner of the on screen keyboard there should be an 'X'. Clicking that will turn it off.
*#5513# (To turn screen upside down)*#5512# and *#5514# (To divide the screen into two, clockwise and counterclockwise)*#5511# (To bring screen back to normal)
After you buy the best laptop under 1000 dollars, you need to take care of it. One thing that you can do is to turn down the brightness and the contrast on the screen. The sharp contrast between bright lights and dark colors is what can burn an image into the screen forever. If you turn the brightness down, you can keep the contrast from being so great. This will preserve your new screen.
Turn your screen upside down
turn the car off and gently push down on the window. but at all possible go to a mechanic
Hold down the power and home button until you see an apple on the screen.
Throw it out
Hold down the top button, until an Apple logo appears on the screen.
PDA
I do not think that you can because it just wont let you do that.
Click the Apple logo top left of the screen and from the drop down menu click Shut Down.
It should ask you if you want it turned down at the opening screen for the first time.