Need help, PC won't display anything

[OmegaStalker]

Ok lads and lasses i'm stumped now and in of help. The story is my little brothers PC randomly stopped displaying an images to the monitor and i tried everything but i cant get it to give me an image now. I've checked the GPU into another PC it worked, I checked on another monitor it worked, I checked the cable using HDMI, VGA, DVI to see and that didnt work, tried the onboard video and that didnt work....

So i assumed it must be the motherboard and bought him a new one (z77A-g41) assembled everything and again nothing it being displayed on the monitor...

Need help cant work out what the hell the problem is...

 

[Feronix]

You said you tried to use the pc with another monitor and it worked? Have you tried to use your own pc with his monitor as well?

 

[OmegaStalker]

You said you tried to use the pc with another monitor and it worked? Have you tried to use your own pc with his monitor as well?

The monitor i tried with it was one of my IPS LG ones so i know its not that plus i tried his BENQ monitor with my other brothers PC and it worked so i cant see what it is really stumped never come across this problem before

 

[Feronix]

Have you tried to use the monitor with another power cord / from another wall socket?
(With your bro's pc)

 

[OmegaStalker]

Have you tried to use the monitor with another power cord / from another wall socket?
(With your bro's pc)

Yup my monitor and his monitor use different types of cords so it cant be that i feel the problem is in the PC as both monitors work fine, the whole pc powers up and all the fans spin but noting signal is being sent to a monitor, could it be the CPU if the CPU was dead would the image still display e.g. the mobo post screen saying CPU failure or something because nothing gets displayed no post screen or anything...

 

[Xenomorphical]

I had this problem in the past sometimes when i put the monitor on different connectors on the videocard.
Have you had the power completely off the system as well and then started it up?

Also, was your brother messing with setting up multiple displays when it happened?

 

[OmegaStalker]

I had this problem in the past sometimes when i put the monitor on different connectors on the videocard.
Have you had the power completely off the system as well and then started it up?

Also, was your brother messing with setting up multiple displays when it happened?

i dont think so he only has one monitor he was playing portal 2 and i called him to do something for me and he went back and it stopped working lol i'll give the monitors a go with different cables and see what happens