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Re: e400 screen
If this happen every time you start PDA I assume that the display is defective. I don’t believe that you will be able to fix this on your own. In my opinion you should contact service partner in your country.
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Since you have already tried to put an external monitor and you didn't see the vertical lines, there's a high
chance that your lcd is having a problem,
because when you plugged in the external monitor that is the test to check the video card,
try to run the lcd bist on the lcd,.. while the computer is off press and hold D + power button at same time,
you should see colors flashing then after that in that test you should see the vertical lines if not then go to bios setup that will be f2 when you turn on the computer.
Monitors mix the 3 "primary" colours, in various proportions, to produce all other colours.
Mix equal parts of all 3 colours, and you get WHITE.
Mix equal parts of only 2 colours, and you get YELLOW.
1. your computer's video-card is not sending the 3rd colour;
2. your video-cable between the computer and the monitor is broken, and is not transmitting the 3rd colour;
3. your video-cable is not TIGHTLY connected at each end;
4. the electronics inside the monitor that SHOULD be producing the 3rd colour have failed.
Try connecting the monitor to a different computer, with the same video-cable. If it works correctly, your video-card is the problem.
Try connecting the monitor with a different video-cable, to see if replacing the cable fixes the problem.
Try connecting the monitor to a different computer, with a different video-cable. If it still is incorrect, then the monitor needs repair/replacement.
Please go in bios mode and check whether the lines are coming there or not.
If lines appear after some time then keep system in BIOS for that much of time and check.
IF coming then this is the issue with the screen otherwise with the system problem and graphics driver is to be reinstalled.