No signal on monitor

[marktruman]

Built a new PC two weeks ago. Come to switch it on today and it all lights up but no monitor signal. Tried two different cables and two monitors. Rules out the monitor

Tried the onboard motherboard HDMI. Still nothing. Rules out graphics card?

Any ideas what it could be?

 

[Len Dananey]

If you use more than 1 stick of memory try 1 stick at a time and see if it comes on, could be a faulty memory stick or lane. If using more than 1 drive just try with the windows one for now. Have you tried a different connection on the back of the card? Or a different connection on the back of the monitor? Silly question but is the monitor all plugged in properly (Yes I am sure it is). Have you tried the 2nd pcie lane just incase you have an issue with the 1st one?. Is everything plugged in correctly? 24pin / 6/8 pin and gpu/gpu's connected? (Again I am sure they are). I am sure it will be something silly or faulty hardware. Sounds like that or possibly a memory issue, just test them all and hopefully you find the issue mate. Oh and have you tried clearing the CMOS/Battery replacement (Shouldn't be the battery if new surely. If none of those things I would contact the place you bought it. Lastly you could try another monitor, but I doubt it is that.

 

[atomixers]

If you’re getting nothing from onboard or add-in graphics cards then you’ve got a lot of troubleshooting to do.
As suggested, unplug everything that’s unnecessary to get to POST such as all PCI-e cards and additional drives, and then remove all of the RAM apart from a single stick in your motherboards suggested single stick slot. If you’ve got multiple sticks of RAM check each one individually ina a single slot configuration.

If this doesn’t get you to POST then you could try checking your CPU is seated correctly and checking the CPU coolers connection. I’ve also heard that some boards won’t boot without a CPU fan connected so you could check that as well.

if you’ve got access to your motherboards manual you could see if there’s any onboard diagnostic information such as warning LEDs that could point you in the right direction.

As you’ve said that all of the lights come on, and I’m guessing all the fans spin up as well the PSU isn’t dead, but could it be the problem? The only way to tell would be to try another if you have one available.

Did you follow good anti-static procedures when building the system? There’s a chance that some static build up may have shorted out the motherboard - but that’s the worst possible outcome, depending on which component cost you the most MB; CPU; or GPU