Built a pc, but doesn't work

[ninjadragon957]

After a few seconds it stops, starts back up again,and continues like that. Nothings appears on the screen at all.

 

[Barty1884]

Take a look here: http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Work through each item, don't just "assume" everything is correct.

9/10 times, it's something pretty simple that's just been overlooked.


Also, please post your full system spec - including make/model of the PSU

 

[Hello man]

After a few seconds it stops, starts back up again,and continues like that. Nothings appears on the screen at all.

Make sure you actually have everything plugged in. Supplemental GPU power is sadly often overlooked by new builders. CPU power is pretty important too.