PC doesn't boot

[alexxandru1998]

Hello, I've built my first pc yesterday and after I have put everything together and try it, it doesn't boot and on the screen it says no signal. However I need to shut it down by pressing the power button a few seconds and if I turn it on again after that I get a one second beep. Also when I plug my PSU in and switch it on from the back the PC turns on automatically. I have tried everything, switching the ram, running it on the integrated video card with the GPU out, reseting the bios, running it while switching the ram and without it, removing the CMOS battery, but nothing. Even when I run it without ram it doesn't beep. I am lost to as what could be the cause and I would appreciate any help.

My PC specs:

Motherboard: Intel DQ76OW
CPU: Intel i5 3470
GPU: nVidia GTX 1050ti
PSU: Energon 550w
RAM: two 4gb modules Crucial
HDD: two HDD that were perviously used in my older pc and worked fine. Might be worth mentioning that the HDDs still have everything on them.

 

[RememberThe5th]

Are you sure that you connected everything right (12V to CPU, and if gpu needs it)?
Try to run it out of case with only CPU and ram stick (Without GPU, HDD and other stuff) and clear cmos before you try to power it on.
And i think that psu isn't 500W as it is Sketchy, but it should run fine low end system.

 

[alexxandru1998]

I connected everything, the 24 pin(or whatever it is) into the mobo, the 4 pin one near the cpu, the one in the gpu, but apart from that there were no other sockets to put the wires in

 

[RememberThe5th]

I dont think that Intel DQ76OW is motherboard model.

 

[alexxandru1998]

https://www.google.co.uk/url?sa=t&source=web&rct=j&url=https://ark.intel.com/products/51999/Intel-Desktop-Board-DQ67OW&ved=2ahUKEwi3rdPIt_HYAhVbOMAKHbrYArIQFjAAegQIDRAB&usg=AOvVaw2ViUNyrejrJp3G5YlALBl6 this is it

 

[RememberThe5th]

I think either you need to update bios or your motherboard is toast.