My monitor would randomly turn off and it would say no signal, but everything else would be working fine. I could press ALT+F4 and press enter and my desktop would do whatever the setting picked, but my monitor would still be black and the power button would be flashing red, and when i press the auto button on the monitor the power button would turn green but flash red again. I have to restart one time to several times until my monitor works again.
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1. Connection: Make sure that both ends are connected properly,
2. Monitor: Most newer monitor has 3 options: VGA or DVI or Automatic. Test the "Automatic" and "VGA" options.
3. Cycle your display option using your laptop keyboard (Alt + F4). Please tap the F4 several times (to change the option to Mirror, Laptop Display only, External Monitor only)
During the boot process you will see on the screen to press a certain key to enter setup Press and hold that key during the boot up process to enter BIOS you can load failsafe defaultsor load optimized defaults ,press escape then press f10 to save to cmos to restart or During the boot process tap thef8 button three times this will boot into safe mode where the only things working will be your mouse and keyboard enabling you to attempt to repair your computer Also you might try Turn Off the computer, now as soon as you hit the power button, keep on holding "Alt" key & keep on tapping "F10 key,ie: Alt+F10, it will open the recovery console ,select full factory restore and follow on screen instruction. (Note:this will erase all datas on the computer) hope this helps
Press a Windows key (the ones with the Windows symbol on as shown right), this will open up the Start Menu.
Use the cursor keys (the ones with arrows on) to highlight 'Turn off Computer' and press Enter to select it
A dialog box will open. Use the cursor keys to to highlight 'Shutdown computer', 'Turn off' or whatever your version of Windows says, and press Enter again.
***Using the 'three finger salute'
Hold down Ctrl and Alt, and press Delete.
Windows 2000 and XP Home Edition users will be presented with a dialog box with buttons on:
· Use the cursor keys to select the 'Shut Down' button and use Enter to select it.
· Select 'Shut down' from the list using the cursor keys and press Enter one more time.
In other versions of Windows the Task Manager will open:
· Hold down Alt and press U to open the 'Shut Down' menu.
· Use the cursor keys to highlight 'Turn Off' and press Enter.
***Hit Alt F4 'till you can't any more
The final method of shutting down that I will explain here is to hold down the Alt key and press F4 repeatedly. This will close every application that is open on Windows and eventually will close Windows itself. You may be asked if you want to save files by some programs, if so use the cursor keys and Enter to get past these dialog boxes.
Make sure your monitor is fully plugged in with all the cable and try pressing Fn F4 which will switch the screens if it thinks there is already a monitor hooked up. So make sure everything is plugged in and press Fn F4 there should be a little symbol that looks like a Tv if it isn't on your F4 key it will be elswhere on the keyboard.
There are a couple of possible key combinations (I don't own a Lenovo but all laptops are basically the same).
On my laptop, you have to press fn-F5. On some, it is fn-F4, alt-F4, alt-F5, or alt-F8. It is generally one of these, you'll have to experiment with them and see.
Also, take a look on your function keys - there may be one that shows a picture of two monitors. If you find this, that is the key (most likely F4 or F5).
but i tested the cables its not loose could it be the video card?
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