Hi!

I have some problem with my computer right now and it's the no signal on monitor problem.
I've tried almost all alternatives.

Everything is new except 1 hard drive and some sata cables (not the problem, tried with other)
My psu is new and working because the computer starts and all fans is going on and such, my Motherboard is new, my RAM is new, videocard is new etc etc.

My motherboard have its own little monitor input and I've tried it and it doesn't work either.

WHAT COULD IT BE?!
Please help a deppressed gamer :(

First off, test the monitor and cable on another computer if possible. If it works fine, then we know that is not the problem.

Next, remove your RAM and graphics card. Try booting now and if it posts, then you will want to replace the RAM one stick at a time. If it posts with each stick, then you have narrowed it down to the graphics card. If it fails when you put in a particular stick of RAM, then you know it is that particular stick.

If it fails even with the RAM and graphics card out, does it beep at all? And if so, what are the beeps? Three short ones, two short one long, etc.

Just because the equipment is new, does not mean that it is functioning. I have had to RMA plenty of brand spanking new equipment before. If you order enough parts, you'll eventually run into bad stuff.