PC Build, mystery problem.

DanRowbotham · Nov 23, 2013

Hi there everyone. I just set up my pc, but when I turn it on, it constantly reboots before even getting to the bios. I figured it would be a cooling problem, but I have a h100i installed at it seems to be working (the light on the front comes on, and the fans on the rad spin up) so I can't see that being the problem. The motherboard also lights up (Asus Maximus Formula vi) but only half of the fans are even turning on. I can only think that I have a defective cpu, or something is shorting out the board. But I have looked everywhere and can not find anything exposed. If you need any more information, pictures or video to help diagnose the problem, please feel free to ask!

jimthenagual · Nov 23, 2013

Do you have the 8pin cpu power connection hooked up?

Here is a really good troubleshooting guide to help. Some of the steps may seem obvious, but double check everything. It is probably something very simple. At least, let's hope it is! Good luck, I know how frustrating it can be on a new buld.
http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

3Dns · Nov 23, 2013

Sound like PSU problem.

Try this steps.
-Turn off the PSU from behind.
-After that push the power button for 30 sec to uncharge all the volts/watts from your system.
-The turn on the PSU button from behind and try to turn on your pc normally.

DanRowbotham · Nov 23, 2013

Great, I'll just go have a look and try all these things! Silly question, but you don't need the gpu installed for the system to boot if you have integrated graphics do you? I'm waiting on a 780 ti, but I wanted to test the system before with the haswell integrated graphics. Would that be a problem?

jimthenagual · Nov 23, 2013

You should be able to boot with the integrated graphics.

3Dns · Nov 23, 2013

Not at all.
HD 4600 from haswell is powerfull. You can play BF3 on medium maybe.

DanRowbotham · Nov 23, 2013

Ok, so I can rule that out, I'll go check everything now.

DanRowbotham · Nov 23, 2013

Ok, I tried the PSU, checkedthat the 8 pin was in place, and went through 1-9 and it wasn't any of them, before I go onto the ones that require me to take off the heatsink, I should also mention that the q led code on the mobo stays at 00 throughout the rebooting, could that be an indication?

jimthenagual · Nov 23, 2013

Bah, according to your manual, the 00 code is 'unused'. Lots of help that is :pt1cable:

Before taking off the heatsink (that's a pain to have to redo so try other things first)

-Try resetting CMOS, if you haven't already.
-Does the DRAM_LED near the MemOK! switch turn off, or is it staying on?

DanRowbotham · Nov 23, 2013

Both the cmos and memok led are hidden under the thermal armour I think, and I really don't feel comfortable taking it off in case it voids the warranty or something.

jimthenagual · Nov 23, 2013

I'm looking at your manual, and it looks like there is a cmos reset button on the back I/O panel (page 2-16)

DanRowbotham · Nov 23, 2013

Ah, I did not see it there, cheers for the heads up! But I tried it and still nothing, I also tried flashing the bios and again nothing.

DanRowbotham · Nov 23, 2013

Could it be a faulty board seeing as half of the fans are not spinning? They are definitely all connected to the fan headers.

jimthenagual · Nov 23, 2013

I would take the motherboard out of the case, set it up on your table. This will rule out any shorts. 'Breadboard it'. If it still won't post, then I'd check the cpu pins to see if any are bent.

Are you getting any beeps by the way?

DanRowbotham · Nov 23, 2013

Ok, I'll try that now!

DanRowbotham · Nov 23, 2013

Ok, I've finished breadboarding and it is still doing the same thing, as for the speaker, I can't see a designated speaker port on the mobo, nor in the manual, is it alright to plug it into a 4 pin fan header?

DanRowbotham · Nov 23, 2013

I also just checked the pins, none are bent out of shape.

jimthenagual · Nov 23, 2013

In your manual page 1-46 shows where the system speaker plugs into.

DanRowbotham · Nov 23, 2013

There was no beeping at all when rebooting. I also tried using the stock intel heatsink to see if it was a pump issue on the h100i, but again, it did not post.

jimthenagual · Nov 23, 2013

What are your full system specs? CPU, memory model#, PSU make/model?

It might be RMA time, but it would be nice to know which to send back.

DanRowbotham · Nov 24, 2013

My spec's are;
i7 4770k
Asus Maximus Formula vi
32gb Corsair Vengeance pro 1866 Mhz
Corsair h100i
Corsair AX1200i

DanRowbotham · Nov 28, 2013

I sent of the mother board for a replacement, is it a big possibility that anything else could have been defective?

PC Build, mystery problem.

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