PC turns on but nothing on the screen

sami22saffoury

Prominent
Feb 2, 2018
12
0
510
Hey, so i just bought my new parts for PC:

CPU: I7 8700
RAM: G.skill 4gb ram (x2 =8gb)
M.BOARD: Asus z370-plus gaming
CPU COOLER: Arctic Freezer Xtreme Rev.2 CPU Cooler
PSU: Corsair 550W Active PFC 80+ VS550 PSU

These are the new parts and i am using my old hard drive wich is 500 gb DM

After i built everything and plugged in the psu everything turns on but nothing on the screen, i am trying the m.board without GPU atm and there is no beeping. I mean i do hear 1 beep once i turn it on but i think thats normal one beep then it stops forever.

Now after i try to turn it on it starts (but nothing on the screen) but after it start it sounds like it restart by it self after like 10 sec from starting it

I am sure thats everything is plugged in correctly so what can be the problem?

I tried clearing the battery and still the same...

I wish you can help me fix it...
 
you stated " Now after i try to turn it on it starts (but nothing on the screen) but after it start it sounds like it restart by it self after like 10 sec from starting it"

1) can you check for a bent pin on your cpu/die or a motherboard short, can you remove the cpu and look at the pins inside the die for a bent pin that looks out of place, if you dont know what I mean, look at this image.
VC7yY2Q.png

2) do you have the 24 Pin power cable and then 8 Pin Power cable connected to the motherboard?
303mhMw.png

3) take the ram out, boot, it should beep in error no ram, slip 1 stick of ram in slot A0 and try to boot again. does it boot properly?

4) take the whole thing out of the case, and breadboard it on a box, connect power cables, keyboard, and video cable only, (no other accessories, usb etc,. conbnect keyboard on the main board) try boot, what is the result?