Everytime i turn on my pc, i only see on my monitor screen a green grid... and if i turn of my CPU the grid turns to white... i am using a geforce video card, and it is working on other p.c... what should i do..?
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There is likely a hardware-error. 1) Did you connect all powerconnectors correctly to the motherboard ? 2) Same question for attached internal hardware ? 3) Memory modules inserted correctly ?
If all OK, it's seems you PC is correctly booting and running succesfully an operting system like Windows. Now, the error might occur something between monitor and PC.
4) Did you recently change the screensettings under Windows ? If your monitor can run max. 1024x768-mode, but you accidentally fiddled with Windows-settings, to set it into 1200x900-mode, your monitor will turn black, not showing anything of Windows. In panic you might have turned of your computer. To solve this, it's best to push the F5-key when booting in Windows safe-mode. Here you can restore the older screen-setting.
5) No damage at pins of connectors between monitor and PC ? 6) Cable between monitor and PC connected correctly ?
If all OK : 7) Does monitor power on ? Yes. Shortly but turns off within seconds (for TFT-monitors) - Something at inverter-level is damaged. This is inside the monitor. No. monitorLED is not even turning on - Monitor has an internal defect
If you hear the CPU fan turn on that doesn't mean the CPU itself is working. It can be only that the motherboard is getting power. Check all your connections such as monitor and peripherals and re-connect them. If you still don't get P.O.S.T. or ANY letters or boot options on your screen then your CPU is dead. (unless your monitor is bad) Another easy diagnostic is using your ears. For example the pitch sound of the fan in some motherboards tends to lower and then increase because it's reading of the hard drive. This means your CPU is ok but either your graphics connection is bad or your monitor is.
Try a different monitor...if the different one won't come up then the prob is your video card in the computer...if it does work then the monitor is defective...it would probably be cheaper to get a new monitor than to have the syncmaster fixed
When you power up your computer and the monitor screen remains dark, the problem can be either be associated with your monitor, or your computer power supply/video card/motherboard or CPU. Perform the following tests to isolate the problem to either the monitor or the computer.
1. Turn off you PC and monitor. Then verify that the 15 pin video data cable connectors are fully inserted into their receptacles on the rear of your PC and on the rear of the monitor and they are tightened down. (on some monitors the data cable is hard-wired to the monitor). Then make sure that both your monitor power cable is securely plugged into a working AC power receptacle. (You can temporarily plug a lamp into your AC power receptacle to make sure you have a good source of AC power).
3. Turn on the power switch on your monitor. The amber colored LED on your monitor should come on. Then turn on your PC. The fans in your PC start to run and continue to run and the LED on your monitor should change from amber to green.
Now if the monitor led remains amber and the screen stays dark you either have a bad monitor or a problem with your video card, motherboard or processor.. Try using a different monitor. If that doesn't solve the problem, you need to have a PC technician test your computer.
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I don't think it is a ram issue.Try this when the computer is booting,hit the F8 key. That boots you into safe mode where only the most necessary drivers and programs load. If it loads in safe mode that is good. A little bit of daignostic work can locate the problem after that.