When i switch on my system, monitor displays a blue screen or a white screen. If i keepon switch-on and switch-off my monitor it shows either a bright screen or complete dark screen and sometimes to the normal screen we could work on. Please help me with this problem.
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Your lcd screen has gone bad and needs to be replaced. To isolate that it's the screen or the video card borrow a monitor from a relative, neighbor, friend or co-worker and plug it into the laptop. If the borrowed screen displays fine without any problems then your original screen is bad. If the borrowed screen shows the white area with black leakage ink as your old monitor then the video card in the computer is bad.
Plug in an external monitor and see if thedisplay shows up on it. It can be any kind of monitor even the old big fat crtmonitors as long as it has a vga cable to connect to your computer's vgaport. If so that proves your video card is ok. The video will showon most systems when you reboot without you having to do anything. Some systemswill require you to hit the FN (Function key) + F1 thru F12. Hold downthe FN key then hit the correct key for displaying on the monitor (F1 thruF12). The correct key will normally have CRT/LCD on it or it will havethe icon of a display.
Please try attaching an external Monitor to your notebook and if the white line still appears then there is something wrong with your display adapter integrated on your notebook's motherboard if not then its your LCD display. Check your Service Tag in the support and see if your warranty still active so you can have either of the 2 replace.
Sorry, but this sounds like a controller issue.
Are you able to open the monitor's menu?
If yes, try the monitor on another computer with other cables, if that doesn't help its a internal problem.
The only thing you could try yourself is opening it up and reseat all of the cables.
If that doesn't help, you should contact a professional or consider replacing the unit.
Try these steps:
1. Check the monitor settings. Access the On Screen Display (OSD) Menu System. Adjust the contrast and brightness using the control buttons in the monitor.
2. Run the monitor self test. Unplug the video cable from the computer (cable from monitor to the back of the computer). Usually it has a blue or white connector. Turn on the monitor alone. It should display the self test pattern (white, red, green & blue). If the images are dark in the self test, it is a problem with the monitor.
2. Rotate the monitor to face a different direction. This will help in eliminating sunlight glare which can cause poor picture quality.
3. Test your computer using another working monitor. If the problem occurs in a known good monitor, then it is a video card or motherboard (if your video card is integrated) problem.
I hope these options help.
First, to verify if it is your display adapter, connect an external monitor to your laptop and see if it displays fine. If it is fine on the monitor, then we know that it is from your laptop screen(in this case, it is either you first check from a technician if it is the colour that has to be refilled or if you need to purchase a new screen). If not then it is from your display adapter(could be from corrupt display drivers). In this case, you would have to re-install new drivers for your display adapter(you can download it from your system manufacturer's website if you don't already have it). Thanks