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Click Start/Control Panel/Display When the display window opens, click the Settings tab. Change the screen resolution by sliding the tab to the right or putting your mouse pointer on the line to the right of the current setting and clicking.
please follow the steps:-
1.) Power off the computer.insert the CD in the drive.
2.) Power on the PC and start tapping F12 and keep on tapping it until you a see a black screen with white text.
3.) select the option of CD/DVD/RW drive and hit enter. the mouse will not work here. you will have to use the keyboard UP and DOWN arrow keys.
let me know if this works for you.
Press FN+F6. If the display is not back then follow the steps.
Please restart your laptop when its booting press F8 key . You will find few option asking for selection. Select that by using up/down arrow key. Select " Last know good configuration" & press Enter. Next page asking for selecting operating system, for example: windows vista or Windows XP etc. Just select the operating system & press Enter again. ( Hope your laptop showing only one operating system ). Your laptop will start normally. After the if you seen the screen dark then press FN+Right arrow in key board(>). When you press FN + ( < ) or ( >) key that's time its working for brightness controlling for screen. Now if all well then fine other wise please let me know .
Another suggestion is, run your Acer driver DVD for installing Display drivers. When finish restart your laptop and watch whats going. If no success then format the Operating system & reinstall again.
A nearby device can cause stray magnetic fields that will cause the display to be affected.
A problem inside the monitor will cause the display to have problems.
If somebody turns on their monitor nearby, the monitor's degaussing when it starts up will cause your monitor to dance wildly for a moment or two.
keep electronics away from your computer. Mobie phones etc. can distort the image shown on the screen for periods of time, usually when a text or call is coming through.
Sometimes if the refresh rate isnt set high enough you will see a noticeable flicker on the screen .. to change the monitor refresh rate .. you can right click on the desktop and then left click on properties .. click on the setting tab then click on the advanced tab then click on the monitor tab ..look in the drop down menu where it says 60 hertz and see if the refresh rate can be changed .. if it cant .. uncheck hide modes the monitor cant see and then click on the drop down menu .. pick a refresh rate .. 75 hertz is what i use and it should stop the flicker
Connect any Desktop monitor to the Laptop and check whether the Display. if the display is fine on the Desktop monitor screen then it can be identified as the Laptop screen malfunctioning.
And if the Display has the same issue that on the Laptop screen
then it can be treated as the Display card issue.
However, it seems to be Harwre related issue. Get the laptop veriufied under Technical supervision to repair the Laptop's display card or the Laptop screen to be replaced if the display is fine on the Externally connectd Monitor.