I several thin clients that for some reason the video has stopped working. I tried several different monitors and still no video. Has anyone seen or experienced this problem before? I tried to google and contact HP but no resolution. Any advice will be helpful.
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Check the cables, try a different monitor, try this monitor on another computer. This will isolate the problem. If it is the monitor, it is not worth fixing, usually. It is far cheaper to make things than to fix them. If it is the computer, a new video card can be installed.
What kind of video card? What kind of monitor? What OS? What application? Is the video card correctly installed, both physically and software-wise? It is seldom that there is "no reason" when video stops working.
Try going into your Start Menu then going into your control panel...then clicking on your "power options"....then switching the options to 'always on'..if this does not work..(as it seems you may not be seeing this because the monitor is in power saving mode) try fiddling with the setup option on your monitor and find a possible powersaving mode enabled function and disable it. every monitor is different so I couldn't really help you here...if this doesn't yield results try another monitor to see if it's the monitor having the problems or the computers video card...the video card could very well be the culprit...
If all drivers are updated and you are positive monitor is ok then it must be the connection in between (video cable) or there is a slight chance the video card is gone bad. I would try a new video cable first Try reseating the video card in the slot on the board (take it out and put it back in) Try the monitor on a different PC if possible with the same cable you are using on yours. If monitor works fine on different pc and cable is good then also try different video card if possible (even if yours is not old) I’ve seen new cards suddenly have problems for various reasons everything from video cable had a little to much tension on it and the solder connections on the video card came loose all the way to the card just decided to quit working from some sort of defect so I wouldn’t rule out the possibility.
But the most common reason for the problem your having is usually loose connection on back of monitor or PC or bad video cable.
Usually the case with this issue is the LCD panel itself. After a certain long period of time, some LCD panels just bug out and stop working. ( not sure why, possibly the way they were assembled and manufactured. For instance the LCD Panel has 8 connectors ((top)) and 3 connectors ((left)) (((Depends on model)))that attach to the main board of the LCD Panel, and on many occasions the thin lines wear and cut and therefore loosing part of your screen. If i explain further how it works i can write you a good explanation, just message me. That is the issue or the Cable connector from the Video Card to the LCD Panel is faulty. Try replacing that or the line will stay there for a long while then eventually your LCD display will begin to show more lines and eventualy Nebula itself. ( unusable )
You can also try repairing the LCD, in some rare cases the only problem when the line shows up is because of the video genesis card inside the FPD. try swapping that out with a known good one and perhaps that will work otherwise eventually the monitor will begin to stop working over time.