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Check the cables. It might be overly simplistic, but if your monitor is connected via a serial cable, one of the pins might be bent or missing. This can cause slight display problems, including a vertical line. If you are using a USB, try another cable and see if the problem persists. Update your video card driver. Some discrete cards have an update feature in the properties window for the device. Right-click on your video card in the programs list, and select "Properties." The update will be a button under the "Drivers" tab if your device is so equipped. If not, visit the manufacturer's website and search for the most current driver for your model number. Updated video drivers could solve the problem. Place a box fan directly behind your computers intake vent for extra cooling. Sometimes if there are system problems, your components can run too hot. If cooling the computer takes away the line, you know have you an overheating problem, not a monitor problem. You might try cleaning the internals with canned air. Remove the housing, and thoroughly blow any dust, hair or carpet fiber away from the fan and off the mother board. While you're there, you can check to see if there are any obvious loose connections. Connect the monitor to another computer if you have one available. This is probably the most definitive test of your monitor's health. If you have a line when the monitor is connected to a different machine, it's likely time for a new monitor. As frustrating as it sounds, taking apart one of today's monitors in an attempt to repair it is more expensive than buying a replacement. If you don't have another computer available, try shutting down the computer but leave the power on to the monitor. Using the buttons on the monitor bezel (if you have them), call up the settings. If the line appears in the menu just as it did in the video from your computer, then you definitely have a monitor problem. Replacement is probably in order
Probably the problem is not with the monitor. Your computer is defective and probably the lines appear because your VGA is defective.
To make sure your monitor is OK, you can connect it to another computer.
First check replacing the RAMs and then VGA.
is there anyway to try moniter on a different computer? it maybe the monitor, cable video card or software. if monitor works on diff comp then u know it's not monitor or cable, then try to update video driver
Check that the signal cable from the computer is firmly connected and that there are no bent pins in either end. If the trouble continues, the problem is in the monitor itself. Given the low replacement cost, it's uneconomical to try repairing these.
This issue may occur if the signal from the video adapter
exceeds the scan range of the monitor. The video adapter setting for updating
the screen (the refresh rate) is incompatible with the monitor. you should reinstall your video drivers in safe mode.
To restart in safe mode repeatedly press the F8 key during the computer startup. This will bring a menu where you'll be able to choose safe mode.
Hi,
The part where you see some color bars and blinking green led is what we call MONITOR SELF TEST. A diagnostic pattern consisting of four colors (red, green, blue and white) appears, and the LED flashes slowly. this happens when signal cable from the monitor is disconnected from the tower and leaving the power chord for the monitor plugged in. If the monitor works properly on a different computer. then its a problem with the computer's video card sending out signal. im 85% sure that its a problem with your video card.
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