- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Could be whats known as dead pixels, this is tested be showing up a black or white screen. Microsoft paint or word will do. If an area always has dots then dead pixel. However if it doesn't constantly remain a dot then, some-thing else. Dead pixels come about due to age.
A technician will be able to diagnose your problem by performing white screen test.
I assume this is related to your LCD monitor.
I think you mean dead pixels. The LCD monitor has tiny pixel elements, one for each red, blue, green color and each one of these colored pixels are turnes on by a transistor. When a transistor fails then the colored pixel it controls does not light up. This is a dead pixel and it shows up as a tiny black dot.
If the screen displays a blue screen, a dead blue pixel will appear as a tiny black dot in the blue screen.
You normally would not notice a few dead pixels unless they are grouped together.
The vertical lines could be caused by the Graphics card/Motherboard or the LCD screen itself. Try to unplug the LCD cable at the tower and look for the self test feature that will be displayed on the LCD screen. If the screen is good it means the Graphics card is faulty (if expansion) or Motherboard (if integrated).
The white glow with no picture means that either the ribbon cable connection between the logic board and the monitor has come lose or dirty contacts, or the LCD Controller (T-CON) board (part of the LCD panel is not getting 5v or 12v depend on LCD panel from the logic board or the LCD controller board has blown fuse, see pictures here for guide (note pin on the LCD board with arrow mark is pin 1 and is the incoming DC power supply line): http://s807.photobucket.com/albums/yy352/budm/LCD%20panel/?action=view¤t=DSCF0881.jpg
You may also want to look for bad caps (bulging top) on the logic board. There should be 5vdc feeding the logic board also.
Open your monitor back up and look for unplugged connectors, especially the one to the back of the LCD. I had this same problem with a HP F1703. The owner whacked it so hard when the backlight stopped that they dislodged the connector.
Anger managemnt classes might help, though owning a computer it will never stick for long hehe
Seriously though, when an LCD is damaged due to impacts etc, then there is only one repair method, replace the LCD. If the screen is still in a working condition, then thank your lucky stars.
If it is still running apart from the white dot, the best thing to do is to learn to live with it if possible, depending on the size of the dot of course. Laptop screens can cost nearly as much as the laptop to have replaced. You may get lucky and be able to find a laptop on eBay to salvage a screen from.