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Shutdown My computer shuts down without warning, with the only on screen message 'No signal' any ideas please. As if someone has thrown the power switch . Thanks

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Hey there mc 1, this message only appears on the monitor, when it not connected to a computer, or is not receiving any signal at all from the computer it is connected to. I suggest you have a faulty video card. I recommend you remove the video card and attach your monitor to to the onboard video port. You may have to make the adjustment in the bios to enable this port. If you need assistance with that step let me know. Good Luck!

Posted on Feb 03, 2008

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There could be any number of reasons for this to happen. However, the most likey reason - assuming that it runs for a bit, and then shuts down - is that the heatsink/fan on the CPU is not working, or not installed properly. Once the CPU heats up to a certain point, it will shut down to prevent damage. Perhaps the CPU fan as gone bad, or is completely clogged with dust.

Posted on Feb 03, 2008

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My computer is on but no picture. It says windows was not shut down properly


Hello Pattiaknight,Make a desktop shortcut to shutdown and include a switch that forces all open apps to shut down without warning.

Just right click the desktop, New, Shortcut, type:

Shutdown -f

Shutdown -f closes any open programs without warning.

Now instead of shutting down the usual way, just use that shortcut to shutdown. If the error stops it means some program wasnt shutting down properly on occasion.

Please let me know if you any further questions or concerns.Also please rate it if you like the answer,it helps alot.
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By shutting down do you mean you get a signal then it goes to no signal, or does it just show no signal regardless of what PC it's on? It sounds like you have display and backlight to see the no signal message so I would guess that the board inside that takes incoming video and sends it to the display has gone bad, or a component gone bad. Anymore electronics get 2 to 4 yrs old and electrolytic capacitors swell or burst on top causing problems from totally dead to weird errors that seem like something else. It just comes out of the blue too, most time no advance warning. Without getting inside the monitor to check it's hard to tell but someone that does bench repair should catch it if there are swollen or leaking capacitors especially if you mention fr them to check for them. If not then it's possible the video display chip has gone bad and a new board is needed. Probably not available anywhere but a seller that parts out working off lease equipment such as on ebay. You've already done what you should by trying a new cable and trying on more than one machine.

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I don't believe that this would be a hardware problem. Most likely the power settings for your PC are incorrectly configured for your liking. To repair these settings click Start/Control Panel, then click Power Options. From that panel, you will be able to set your power schemes. I would recommend the Always On option.

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