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I have been trying to switch on my desk PC but it goes off automatically with a message saying ' no signal output'. please help

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When you power up the computer then check num lock led on key board if it is on and off when you press num lock then your cpu gives display to monitor .
For that when you power up the computer press F8 key then enter in enable vga mode and go to display property then change screen resolution to 1024*768 then apply and ok.
but if num lock led is constant on or off when you press num lock key then you need to opon cpu cabinet .
Then reattach the ram memory pull cmos cell from motherboard for 10 minutes then check.
Also reconnect processor and it's fan then check.
Also reattach pci card or vga card if any.
Make sure motherboard is not ground with cabinet cover.
Let me know if you need further assistance.
thanks for using FixYa.

Posted on May 15, 2010

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Posted on Jan 02, 2017

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Connect digital output from your graphic card to DVI input of the monitor. Disconnect any other signal cables from monitor and switch on both devices (PC & monitor). Wait a while. Monitor checks its inputs and a activates digital DVI, because it is only one active input on it.

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