why does my computer monitor keep shutting off

There are several possible reasons why a monitor would turn off randomly. Some of the reasons relate to the monitor while others relate to the computer. If the monitor is staying on, but losing signal (e. g. , the power light goes from green to orange) this is almost always an
and not the monitor. If the monitor power light turns off, then it is almost definitely a problem with the monitor. If you've been away from the computer and the monitor is turning off but wakes up if you click a mouse button or press a key on the keyboard, the monitor is turning off because of features. One reason the monitor could shut off is because it is overheating. When a monitor overheats, it will shut off to prevent damage to the circuitry inside. Causes of overheating include dust build-up, excessive heat or humidity, or blockage of the vents that allow the heat to escape. If the monitor is overheating, it is best to unplug the monitor and let it cool down fully before using again.


Then, if you have (anti-static, for electronics), try to blow out any dust that may be inside the monitor casing. If the room where the monitor is being used is very hot, find a way to cool it down, either by turning on a fan or the air conditioning system. Wait until the room cools down some before trying to use the monitor again. Also, if you're using an older monitor, upgrading to a newer will resolve many heat related issues in a hot environment. Although not as common, if the is loose and is not securely connected to the back of the monitor, it can cause a loss of power, resulting in the monitor shutting off. Make sure the power cord is firmly in place in the back of the monitor. It's also possible that the power connector in the monitor is going bad and not receiving adequate power from the power cord. In this case, it is typically best to replace the monitor instead of having it repaired.


Another reason the monitor could shut off is because of a malfunction in the circuitry. There could be a short in the wiring or some other failure in the circuitry, causing the picture to go black or causing the monitor to shut off completely. In this case, there may not be much you can do other than buying a new replacement monitor. Monitors are usually not economical to have repaired since the repair cost can be more than the price of a new monitor. You could bring the monitor to a computer repair shop to have it looked at, but they are probably going to also recommend replacing the monitor. If the monitor is staying on, but you loose the video signal, it's very likely an issue with the or in the computer. A computer randomly shutting off can also be an issue with the computer or video card overheating or a defect with the video card. If the video card is a known good video or if the video card is on the motherboard, there may also be problems with the motherboard.


A bulged or other failing components on the motherboard can cause a computer or monitor to shut off. See: Figure 1: Back I/O ports 1. DC input power port 2. VGA port 3. DVI-D port 4. USB 3. 0: 2 5. USB 2. 0: 2 6. LAN port 7. Audio: Line in 8. Audio: Line out 9. Audio: Microphone Do you have a DVI video-cable, and a DVI-input socket on the back of your TV? Or, if your TV has a HDMI-input socket, you can buy a video-cable with a DVI connector at one end and an HDMI connector at the other end. Connect the cable to that #3 port ("DVI-D") and to your TV. If so, you can use your TV as a temporary replacement for your monitor. Who do i contact about replacing the power supply? Did you purchase the monitor at the same time as the desktop computer? If not, then the warranty for the computer does not cover any issues for the monitor.


What's the manufacturer model-number of your monitor? Size of the screen? Depending on where you live, there may be a TV/video repair shop near you, with a qualified technician. He/she probably will charge you $75 to $120 USA to disassemble, trouble-shoot, repair, reassemble, and test. Add the cost of a replacement power-supply, and it probably will be less expensive to buy a replacement. I have no other monitor that i can use to test your idea that it may be the computer or the monitor. Really? Are you a "hermit", with no friends who can bring their monitor to your location, to do the suggested testing? Of course, you could buy a new monitor from a store that offers a "one-week-money-back-guarantee", use it to do the testing, and then return it to the store, to get your money back. Do you have a friend with a laptop computer? If so, invite them to your home, and connect your monitor to the video-output port of their computer.

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