PC Hardware forum


no signal detected on monitor PLEASE HELP

by redcann / June 16, 2013 10:47 PM PDT

Hi, so basically it was all working one day the next day the computer was moved to a different room and it turns on still and the monitor is getting power but it says no signal detected. Ive made sure the cord connecting the monitor and PC was plugged in properly because that has fixed it before but no luck this time, please help thanks.

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All Answers

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No signal
by pgc3 / June 16, 2013 11:56 PM PDT

Things to do: Check cable/input for bent pins. If you are using a standalone video card make sure it is seated in slot. Try a different monitor. If all of these fail the guess would be onboard video failure (if you are using onboard video) or failure of video card..in which case, install or replace slot card.

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by redcann / June 17, 2013 12:41 PM PDT
In reply to: No signal

The pins aren't Bent, were can I find the video slot. Can you please use simple instructionsas I'm not familiar with were the video card is etc. Cheers

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I have same problem
by vidvicar / June 24, 2013 4:53 PM PDT
In reply to: reply

Unless you installed a separate video card your "video slot" is the VGA port. It has a set of holes for the video cable (which has pins) to plug into.

In the past I have made the mistake of selecting a video size that my monitor did not support. It left me with no video. What I did was to shut down the computer with the power switch (or pull out the power cord.) Then I removed the cord to the monitor and booted up the computer with no monitor attached. This set up the computer to receive a new monitor.
After several minutes of letting the computer boot up without a monitor, I shut down the computer again by turning off the power switch. I reconnected the monitor, then rebooted the computer a second time. When the computer came back up it recognized there was a monitor attached and assumed it was a new monitor. It loaded drivers and used the monitor as if it were a new one. My problem was solved for that particular instance.
But I currently have an old XP computer with a monitor that doesn't even show a power light. Nor does a new monitor show a power light. If you have a flat screen monitor it shows the power light when the computer connection is good - not just when the power cord is attached. If your monitor does not show a yellow or green light when the computer is powered up then your video section on the mother board is probably bad.
There are monitors that plug into the USB port if you really need to get the computer up in order to "clean up" the hard drive and need to back it up. But the best answer is to replace your mother board. Chances are good your system will still recognize the hard drive after doing that - but not necessarily. With a new motherboard you might need to enter the BIOS setup and make sure the primary boot drive is the one with Windows on it (usually your internal "C" drive.)

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