Sign in with
Sign up | Sign in
Your question
Solved

No POST, CPU restarts infinitely

Last response: in Systems
Share
July 7, 2012 8:14:00 PM

This is my first ever build and I am at my wits end. I connected everything I believe I should have and tried a ton of different things and no matter what I do I get the same problem. The computer does not POST, the speaker does not beep and the computer restarts infinitely. First the CPU light blinks once, then the ram light, then the cpu light, then the ram light and it restarts. It looks like this:

http://www.youtube.com/watch?v=wxq4RtwtAsw&feature=yout...

I have made sure the cables are connected, see the following pictures:

http://imgur.com/a/Wd9oT

I also have the CPU fan plugged in, but forgot to take a picture of that

I have already RMA'ed the mother board (in an attempt to fix this issue) and had used the video card in a different computer. So I can be fairly sure both of those work. The power supply, RAM, and the CPU are new. However, I have tried each of the 4 sticks of RAM I have in the suggested slot according to my motherboard's instruction manual and the same problem keeps happening. I have also tried one stick in each of the four slots and the same problem keeps happening. I've tried flipping the speaker around (so the cables are connected in the opposite order and that didn't work). I've tried removing the video card entirely, moving it to each of the other slots, and only hooking up one PCIe 6 pin. All of those didn't work. I've tried all combinations of the EPU and TPU switches that came on the motherboard and that didn't work.

Every one of the fixes I attempt results in the same issue.

Components:
Asus P8z68 Deluxe Gen 3
Intel Core i7-3770 LGA1155
Radeon HD 6950
Antec Earthwatts 650W
Crucial 4GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CT51264BD160B

I don't have access to another computer to test these components in. Please tell me I am missing something dumb.


EDIT: FIXED! Bought a cheap intel celeron processor, used that to upgrade the BIOS. The original i7 works now. Thanks to everyone for their help.
a b B Homebuilt system
a b à CPUs
July 7, 2012 8:40:41 PM

Maybe you need a BIOS update.
m
0
l
Related resources
July 7, 2012 8:49:37 PM

FinneousPJ said:
Maybe you need a BIOS update.


How would I update my BIOS if I can't get to my BIOS?
m
0
l
a b B Homebuilt system
a b à CPUs
July 7, 2012 8:52:18 PM

did you try the cmos thing?
m
0
l
July 7, 2012 8:59:45 PM

Also, the fan on top of the CPU never seems to get going, could this be an issue? See 7 seconds into my video.
m
0
l
a b B Homebuilt system
a b à CPUs
July 7, 2012 9:04:06 PM

CapeKid said:
How would I update my BIOS if I can't get to my BIOS?

Read your manual and go to Asus website for the download.
m
0
l
July 7, 2012 9:08:42 PM

FinneousPJ said:
Read your manual and go to Asus website for the download.



I mean, how am I supposed to update my BIOS if I can't even boot my computer?
m
0
l
a b B Homebuilt system
a b à CPUs
July 7, 2012 9:28:51 PM

That's a good point :lol:  Why don't you call Asus about it?
m
0
l
a b B Homebuilt system
a b à CPUs
July 7, 2012 9:33:29 PM

do you have coverage on you mobo if so get it replaced... that may be the problem and there is really no way to test it unless a new one is installed and tested if the problem stops

also try plugging you cpu fan plug into the SYS_FAN if that does not make it spin then you almost definetely have a bad mobo
m
0
l
July 7, 2012 9:55:38 PM

PanicMaster85 said:
do you have coverage on you mobo if so get it replaced... that may be the problem and there is really no way to test it unless a new one is installed and tested if the problem stops

also try plugging you cpu fan plug into the SYS_FAN if that does not make it spin then you almost definetely have a bad mobo


I tried plugging it into the other fan spots, no change. I also really don't think it is a bad mobo, as this is my second new one with the exact same problem. The chance of getting 2 bad mobos in a row with the exact same issue seems really low. The chance of me being dumb and missing something seems higher. Or maybe a bad CPU, since that has never been replaced, but it is no longer under RMA (since I spent so much time RMAing the motherboard) and I would rather not buy another CPU.
m
0
l
a b B Homebuilt system
a b à CPUs
July 7, 2012 9:59:10 PM

... well it could be your psu or your hdd... check your gpu as well.
m
0
l
July 7, 2012 10:02:05 PM

PanicMaster85 said:
... well it could be your psu or your hdd... check your gpu as well.


The PSU was working in another computer. I don't have the HDD hooked up and my GPU was working in another computer as well, but it is possible I installed it incorrectly. If you could see the attached pictures, maybe I missed some power cord?
m
0
l
July 7, 2012 10:04:54 PM

I've tried looking up the documentation for my video card, but all it says is hook in the power cables, no specifics, nothing useful.
m
0
l

Best solution

a b B Homebuilt system
a b à CPUs
July 7, 2012 10:04:54 PM

I still think it most likely needs a BIOS upgrade. A HDD isn't necessary for POSTing anyway.
Share
a b B Homebuilt system
a b à CPUs
July 7, 2012 10:50:57 PM

yeah... well your right, try to get the bios updated. you might have to bring it in to geeksquad or something were they have special tools that can easily update it.... don't know the cost(always over priced)
m
0
l
July 20, 2012 12:10:51 AM

Best answer selected by CapeKid.
m
0
l
!