Computer will not turn on

[ProClifo]

I have just bought PC parts and I finished building it, but it won't boot. I plugged the 24-pin PSU cable into the motherboard, 4-pin PSU cable into the motherboard, and a 8-pin PSU cable into the video card. First I tried to test boot it manually using a flat headed screwdriver, but it didn't work. Then I put it into the case and plugged in the power switch for the PC case and pressed the power button, but it didn't work either.

 

And yes, I did remember to turn on the power supply.

 

I don't know what the problem is. I have never been able to boot it. The only sign of anything actually working was the green LED on my motherboard and the green LED on my video card. But now, the lights aren't even showing anymore. I don't know why they are not showing light anymore, but they used to.

 

What do you think the problem is? I talked to some friends on Skype, and they said the PSU might be defective. Which component do you think is the problem? Could there even be multiple components not working? Is it possible that I have also fried my motherboard or GPU?

 

Here are my specs:

 

ASUS B85M-G, Socket-1150 m-ATX

ASUS GeForce GTX 760 2GB PhysX CUDA "DirectCU II OC"

Intel Core i5-4670 Processor Socket-LGA1150

Corsair DDR3 16GB 1600MHz Low Profile 2x8GB

Corsair CX 750W PSU ATX 12V V2.3

CM Storm Scout II

[TheSLSAMG]

I have just bought PC parts and I finished building it, but it won't boot. I plugged the 24-pin PSU cable into the motherboard, 4-pin PSU cable into the motherboard, and a 8-pin PSU cable into the video card. First I tried to test boot it manually using a flat headed screwdriver, but it didn't work. Then I put it into the case and plugged in the power switch for the PC case and pressed the power button, but it didn't work either.

 

And yes, I did remember to turn on the power supply.

 

I don't know what the problem is. I have never been able to boot it. The only sign of anything actually working was the green LED on my motherboard and the green LED on my video card. But now, the lights aren't even showing anymore. I don't know why they are not showing light anymore, but they used to.

 

What do you think the problem is? I talked to some friends on Skype, and they said the PSU might be defective. Which component do you think is the problem? Could there even be multiple components not working? Is it possible that I have also fried my motherboard or GPU?

 

Here are my specs:

 

ASUS B85M-G, Socket-1150 m-ATX

ASUS GeForce GTX 760 2GB PhysX CUDA "DirectCU II OC"

Intel Core i5-4670 Processor Socket-LGA1150

Corsair CX 750W PSU ATX 12V V2.3

CM Storm Scout II

Do you have any RAM?

[ProClifo]

Do you have any RAM?

Oh yeah, I have two ram chips with 16 GB (2x8GB). I will add them in the specs list as well.

[lubblig]

what's cooling the cpu?

[ProClifo]

what's cooling the cpu?

The stock CPU cooler that came with the CPU

[ProClifo]

Nope, I have not.

[lubblig]

The stock CPU cooler that came with the CPU

ok, just wanted to make sure that you didn't forget to cool the cpu. Is it plugged in correctly? And as Linus always does in his build guides, make a knot with the cable so the cables doesn't get stuck in the fan.

[lubblig]

 And as Linus always does in his build guides, make a knot with the cable so the cables doesn't get stuck in the fan.

Or maybe it doesn't happen anyway

[ProClifo]

Have you tryed booting the board without gpu?

I just tried it, and it did not work.

[ProClifo]

ok, just wanted to make sure that you didn't forget to cool the cpu. Is it plugged in correctly? And as Linus always does in his build guides, make a knot with the cable so the cables doesn't get stuck in the fan.

I am pretty sure I plugged it in correctly. Does it matter which way I plug it in? Either way, the motherboard is supposed to show a green LED even if the CPU cooler is not connected, right?

[lubblig]

I am pretty sure I plugged it in correctly. Does it matter which way I plug it in? Either way, the motherboard is supposed to show a green LED even if the CPU cooler is not connected, right?

you can only put it in one way, I just thought if it was all the way down or in the wrong one. If it is in the wrong one the motherboard will detect that there is no cpu cooler connected and now Im guessing though but maybe not start. But make sure it's in the cpu cooler one. Check the manual to see that.

 

About the green led I have no idea but yeah I guess...?

[lubblig]

so basically make sure it's in the cpu fan one, not pwm fan one...

[niksuto]

are you sure all power cords are connected on all ends, and check if the power brick or wall socket is turned on. good luck, I hope it's not a hardware defect.

 

also, check if the power button is connected to the right pins.

[lubblig]

Yea some will have a light on it if theres current

oh ok, wasn't sure or if everything had to be connected that needs to be connected before it lights up. But when I just wrote that I realised how dumb that is...

[Guest]

its possible u fried the mobo when u were turning it on manually

check to see if the spu is working

take all power cables then get the 24 pin (whilst psu i turned off from switch) paper clip from a green wire to a black wire in the 24pin

http://www.overclock.net/t/96712/how-to-jump-start-a-power-supply-psu-test-a-power-supply-and-components

if the psu turns on its most likely some problem in the mobo/ mobo is having problem with 1 of the compents

but if it is a component the mobo will turn on and post read(the little screens on ur mobo) out tells u whats wrong or there will be series of beeps 

try re-seating EVERYTHING in the mobo inc. the cpu

[Viking Kong]

Check all motherboard power connectors and ram dims? Seems to be a problem for me sometimes.

Also does the motherboard light come on when the psu is on?

[ProClifo]

Check all motherboard power connectors and ram dims? Seems to be a problem for me sometimes.

Also does the motherboard light come on when the psu is on?

The motherboard light used to come on when the PSU was on, but now it doesn't anymore. I connect all power connectors to the motherboard, plug in the PSU, turn on the PSU, but there is no light.

 

And I am gonna try the paper clip method right now.

[Viking Kong]

The motherboard light used to come on when the PSU was on, but now it doesn't anymore. I connect all power connectors to the motherboard, plug in the PSU, turn on the PSU, but there is no light.

 

And I am gonna try the paper clip method right now.

Do you have another psu you can test your system with? and check the psu that is in your system right now with another pc.

[Xsilent(X)]

take a picture of the case inside and post it here. did you pluged in the start connectors reset connectors and hdd led so far?... try to shortcut the start pins by connecting them together with a metal screw driver.

[Viking Kong]

Do you have any RAM?

Still hasn't said yes or no.

[ProClifo]

Update: I did the paper clip method. The power supply is working! That narrows it down to the motherboard. (or CPU? Or chipset?)

 

Yes, I do have RAM. Both chips are plugged into the yellow dimm slots.

[ProClifo]

take a picture of the case inside and post it here. did you pluged in the start connectors reset connectors and hdd led so far?... try to shortcut the start pins by connecting them together with a metal screw driver.

I already tried that, but I can take a picture of the case anyhow.

[Xsilent(X)]

do that.

[godlikegohan]

did you try pulling 1 ram stick out. and pulling video card  out of the case. then try to start

hook monitor to hdmi port on motherboard when video card is out of the system

 

if that does not work... pull the motherboard and test it out side the case. you could have a short on 1 of the motherboard standoffs

[Paul Ston]

Sorry to bring this topic up again *3 years from the future*

I had the same issue , have you solved it?