I have a problem on my monitor or I think the system unit itself. please help.
while surfing in the internet my minotor shut down, don't know why but the monitor is not broken I tried to connect it to a laptop and it works and I already replace the video card to a new one.
Sometimes when my I open my computer it doesn't display anything, nothing at all, but sometimes it does and works properly. and there is this one time that the monitor shut down and also the mouse isn't working, I plug the mouse to other usb port and it works but the monitor doesn't display anythinh at all.
please help.thank you

Try removing the video card and RAMs than put everything back in its place. It happened to me several time to have my monitor LED going orange (not working), when turning on my computer and failing to connect devices.

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