New PC Built Not Booting _ Stuck in FANS On and Off LOOP

Hi, i have a big problem right now.

I have just finished building my New PC (First time i do this) and when i Turn it ON, it does not show anything on the Monitor, not even the First Screen for configuring the BIOS, nothing... What it is doing instead is that it keeps turning on and off the 2 CASE FANS and the CPU Cooler FAN and the HDD... It does this every 3 to 5 seconds, and it keeps like that INDEFENETELY on a loop.

Please help me understand what is going on? The strange thing is that before i assembled everything INSIDE the Case, i did a TEST BUILD just like i saw on the NEWEGG Video on Youtube: "How to Build a Computer Part 2"..., and it seemed to work, i got the FIRST SCREEN of the Motherboard BIOS. In that moment i did nothing else, i didnt selected any option, i just turned off the Power supply, and i kept assembling everything else.


In this TEST BUILD (where everything worked fine), i only installed the MOBO, CPU, COOLER, PSU, RAM Memory, POWER CONNECTORS and the GRAPHICS CARD. I turned it ON by Touching (Short) the 2 power Pins with a Screwdriver (as shown on the Video), and after less than a minute i got on my monitor the first Configuration screen for the BIOS...


Then AFTER i assembled everything onto the CASE, i connected all the remaining components: HDD, HDD Sata and Power connectors, CASE FANS, CASE FRONT PANNEL CONNECTORS. Then with everything set, i Turned it ON, and then is where i got NOTHING on the screen, and the FANS and HDD in a constant loop of turning ON and OFF....


The last thing i have tried is that with everything in the case, i have UNPLUGGED everything that was not necessary, leaving only the SAME COMPONENTS that i connected in the TEST BUILD...  But nothing changed, the same behavior of the CPU Fan going ON and OFF, and nothing on the screen...

I have also tested connecting the monitor to the MOTHERBOARD DVI connector, but nothing...

This are the component SPECS:
- Intel Core i7-4770K Quad-Core Desktop Processor
- Gigabyte Z87 LGA 1150 2 Way SLI mATX Motherboard (GA-Z87MX-D3H)
- Corsair Enthusiast Series TX650
- NVIDIA Quadro K600 1GB DDR3 Graphics card
- Cooler Master Hyper 212 EVO - CPU Cooler with 120mm PWM Fan
- G.SKILL Ares Series 16GB (2 x 8GB) 240-Pin SDRAM DDR3 1866 (PC3 14900) Desktop Memory F3-1866C10D-16GAB
- Western Digital Caviar Black 1 TB SATA III 7200 RPM 64 MB Cache Bulk/OEM Internal Desktop Hard Drive - WD1002FAEX
- Corsair Obsidian Series 350D Performance Micro ATX Computer Case

NOTE: I have been very carefull while installing everything, and i have used a Antistatic Mat and wrist strap...
unrinoceronteAsked:
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JohnBusiness Consultant (Owner)Commented:
Did you put thermal compound on the CPU?  It appears the CPU is starting and immediately overheating and stopping. If you also installed the GPU chip, you should have put thermal compound on it as well.

.... Thinkpads_User
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unrinoceronteAuthor Commented:
Yes i put Thermal Compound on the CPU (The amount i used was a little less than a bean, just like shown in the video...)

The GPU came already assemblied, is a very small card, and it didnt say nor i can see a place to put thermal paste...

The strange thing is if that was the problem, it would not had TURNED ON on my first TEST BUILD, but it did... So i guess is no Thermal Paste Related....
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Contigo1Commented:
Hi,

You may want to make sure all your power cables are connected correctly and are working. Also ensure the PSU is connected to the mains correctly a lose connection could cause this behaviour.

If it was an over heating issue the CPU should shutdown and not start up again straight after (Unless you press the power button again). So if it is turning on and off on it's own I would suggest it might not be an overheating issue.
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JohnBusiness Consultant (Owner)Commented:
Another possibility is that something has shorted to tha case or a board was mis-seated. Can you take it back to the test setup that worked? That will help troubleshoot.
... Thinkpads_User
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unrinoceronteAuthor Commented:
GOOD NEWS!!!

I just Cleared the CMOS JUMPER (altough that didnt seemed to do nothing), and also i tooked out the CMOS BATTERY, i reinstalled it and now it BOOTED!!!

It came to the FIRST SCREEN that shows this: FIRST BOOT SCREEN
This is the same screen that appeared when i did the first TEST BUILD, and my guess is that since i did not had a Keyboard connected i could not select any of the available options, and then since i just TURNED OFF the PC by Unplugging the PSU, it got stock without the Default settings being loaded....

I will connect everything back again and let you know if still works.

Can someone explain me What was going on, or if in fact my explanation has sense?


EDIT: Please take a look at this other Question regarding my GPU and the Slot that it is supposed to be connected to the MOBO: Which Slot for GPU on Motherboard?
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JohnBusiness Consultant (Owner)Commented:
It is reasonable (not sure) that something during the build and subsequent turn on changed something in the BIOS.

In the other post, the thought was you could connect the GPU to any slot.

... Thinkpads_User
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Contigo1Commented:
Hi,

Your suggest in theory could be possible if the BIOS didn't load the settings correctly however it is a bit of a weird one.

Glad you got it working in the end though!
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willcompCommented:
Maybe it was the BIOS, but your symptoms seemed more like those of a stuck power switch. If the problem recurs, try turning on by jumpering power switch pins on motherboard.
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Gary CaseRetiredCommented:
The issue certainly sounds like it was a short of some kind ... either a stuck power switch or an intermittent short that you have "moved" a bit by working with the motherboard while doing the CMOS reset.

Hopefully it's all resolved.    ... but just to be sure this isn't waiting to bite you again, are you CERTAIN that you have all of the motherboard standoffs mounted in the correct place?    If you have ANY doubt, remove the motherboard and double-check => an extra standoff where it doesn't belong will short against the motherboard and can cause major issues.    Or a missing standoff can let the motherboard flex more than it should and cause problems as well (in the worse case it could actually develop a small crack).
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unrinoceronteAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for unrinoceronte's comment #a39458394
Assisted answer: 125 points for Contigo1's comment #a39458385
Assisted answer: 125 points for thinkpads_user's comment #a39458390
Assisted answer: 125 points for willcomp's comment #a39458531
Assisted answer: 125 points for garycase's comment #a39458785

for the following reason:

Thanks everybody, even tough i some how solved it by doing what i said, your opinions helped me and i too believe that it might be that something shorted the board since i am not good at this.. at least this first time even tough i was carefull, who knows...

Garycase: regarding your questions about the STANDOFFS, i was pretty careful on that, and i first did like a "copy" of all the stands with a white paper, wher i maked the exact positions of  all of them... i think they where around 7 standoffs for the screws, and one was like a "pointy" guide...

The strange thing tough, and is a different subject, is that the Back Pannel Connectors dont FIT quite well with the included "PLATE", well mostly the upper 2 USB 2.0 ports and PS/2 keyboard port (not usefull anyways).. these are a little OFF so connecting my mouse and keyboard to those USB ports is a little difficult, but manageable... It seems that the MOBO should go a little more to the left (in the direction to its mounting side...), just a couple of millimeters more... That makes me thing if there might be somehting obstructing the MOBO....  In the weekend i will remove the MOBO and take a look just to be safe..
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unrinoceronteAuthor Commented:
Hi, i think this is a mistake, i didnt ask to close this question in this way. I want to assign the points to all the experts that helped me.

Please close the question but give CONTIGO 1 the best solution, and keep the points as i did, divided in the 4 experts.
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