No signal e machine starts up with no signal to the keyboard or the monitor? What to do?

Make sure you are connecting the monitor signal lead to the correct signal output on the rear of the machine. Some desktops have extra video out connectors when they have a graphics card fitted. If yours has a graphics card the display connector will be away from the back USB ,audio and keyboard ports and near to some silver pop out panels near the bottom of the tower.

how many hard drives do you have two or more when reset bios default it can happen.you must be sure to start from the drive there windows is.bios optimal default probely changed drives

Try an bios reset

Many computers will not start without a keyboard connected. Find a working keyboard, and connect it....

Hi there,

No, Check the cable which is connected to the monitor. Unplug the cable from the monitor and plug it back in. It would do better.

I was just dealing with this last night. My pc would come on, but I kept getting a "No Signal" message on my monitor. I first plugged the machine into a known working monitor. It worked fine so that eliminated the video card issue. Then I plugged the monitor into a different computer...it too worked. So I knew that the monitor was good. I then switched the cord from the faulty monitor and still didn't get a signal. I proceeded investigating the issue. I found that if you boot the machine in safe mode, it actually caught a signal. So...I figured it must be something to do with the resolution. My solution: Boot the machine in safe mode, change the resolution in the control panel and reboot the machine. If it doesnt catch the signal booting in safe mode, I suspect it is a faulty video card. You are likely to find what you are looking for online at zipzoomfly.com or newegg.com

Hi...

When you monitor saying which is no signal this is a monitor port problem. Check your monitor connector if it is properly connceted to the motherboard. That is the only way of monitor saying no signal.

Regards
PCmania

your motherboard may be going out is your keyboard also acting crazy

try to reinstall your memory card

Do you have two video outputs on your PC ie. one on the motherboard adn a separately installed card maybe? If you do you need to set the BIOS so that it uses the AGP/PCIE video card and not the 'onboard'. Try the onbopard vodeo card first to see if you get a signal there.

If you do NOT have two video outputs, and you can not see a signal then you may have a prblem wiht your monitor itself. Is this a known working monitor to start with?