When I start my PC, displaying in the monitor comes as a straight line in mid portion of the screen or sometime display appear in the upper half or Lower half portion of the screen. If I let the system running for 15-20 mins without doing anything, full screen display appear. I have already cleared the dryness of PCB of monitoe including EHT portion too.But, still my monitor problem persist. Can anyone help me to solve my problem.
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First thing to do is determine whether the problem is the monitor or the PC.
Do you have another PC you could try the monitor on, or perhaps a friend will lend you a monitor for an hour or two?
Obviously if the display is ok on another monitor, then the problem is your monitor, however if the display is still "too big" then the problem is the PC.
By the way, when you say the display is "too large" what EXACTLY do you mean?
Open this link and make it full-screen. Watch the screen for 20 seconds or so to see if the line of lit (white) pixels remain.
If this line remains during this, and even when the the computer is first starting up, it is most likely a row of "lit" pixels caused by a faulty connection or circuit inside the display.
While you can sometimes rub the area of the screen near a single lit pixel, an entire line of them usually denotes a more complex problem that can only be fixed by having parts replaced by a technician
Note: Be sure all of your cable connections are securely fitted, and that the line is there no matter what is displayed on the display (especially at the boot screen before Windows loads).
Disconnect the monitor from the computer and check if the vertical line still appears on the screen . If yes the monitor needs to be replaced.
Generally all viewsonic screens come with 3 yr warranty and you can call them up for repairs or replacements .
Try replacin a new display card. If it is fine working.ok
If not try fixing for cold solder in the video section.
I suggest video section according your report the light green LED lighted that shows the power section is doing fine.
If it's working fine in DOS, it can only be your display drivers for your operating system. What happes when you start in SAFE MODE? When you PC starts, keep pressing the F8 key, go to Safe Mode. If it works, bring the Resolution down to 800 X 600 and load the new display card drivers. Restart, should be fine.
I had the same problem. I fixed it completely today. The horizontal lines disappeared. IT IS DEFINETLY THE DEVICE DRIVER. I confirmed my monitor model tyope (dell M783s) and downloaded the specific driver for this monitor.
I had to do these exact steps or did not work.
1) with the problem screen, disabled the display adapter under the Hardware/Device Manager settings.
2) Restart the PC
3) Boot will come up with brown lines still but the screen will low resolution of 600x800.
4) Then I installed the correct device display monitor driver onto the pc. ( you may need to scan for new hardware, then choose the directory with the new hard drive.)