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New Build - Boot Issue

post #1 of 8
Thread Starter 
I'd like to start off by saying Hi, first time poster and was referred here from another forum as I was told the members are very knowledgable.

I just rebuilt my PC, new components are:

Asrock P67 Extreme 4 motherboard
Intel I7 2600K
GSkill 2x2gb 2133mhz memory
Corsair H70 heat sink

Reused components:

HD Radeon 5870
3x seagate 7200 rpm hard drives
Coolermaster CM 690 case
OCZ Gamexstream 700w power supply.

The error I'm having is when the PC boots the fans will spin it will 'run' (but not boot to bios) for 5 seconds or so then crash. THe PC will turn itself back on boot fans for 1 second crash, again crash then then boom boot up.

I did try one OC on this PC and Prime 95 crashed my computer but the error was occuring prior to the OC.

Things I've attempted to do to fix the problem:

- took apart the entire PC to check and see if I had a standoff in the wrong place assuming it was shorting out the board, I did have one in the wrong place but the problem still exists.

- 7 hours on Prime 95 and a windows diagnostic memory test, no errors in either

- The GPU is used for about a month no issues in prior computer

- Last night I reset CMOS and thought I fixed the problem, I had three consecutive boots without failure, but this morning the error continued.

I'm planning on taking the computer back to where I purchased the parts (they have a service area) tomorrow to have them look at it so they can tell me if the PSU is faulty or if the motherboard is. I don't think it's the PSU, if the PSU was faulty there would be issues when I game or when I ran prime 95 for 7 hours. Once the computer is booted it runs rock solid, if power were a problem I would think you'd notice it.

Prior to taking it back, was hoping for some insight here, if you have any please feel free to post.
post #2 of 8
I was having this problem with my ud5 turned out to be a faulty ram module, try using just one at a time and see what happens.

It could also be to do with your ram clock speed vs how sandy bridge works not sure though not really an expert.
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post #3 of 8
Thread Starter 
If the ram was faulty wouldn't have Prime 95 or the windows diagnostic picked something up?

I'm not an expert either....
post #4 of 8
Quote:
Originally Posted by whitey_rolls View Post
If the ram was faulty wouldn't have Prime 95 or the windows diagnostic picked something up?

I'm not an expert either....
I would have thought it should, but it didn't for me. unless me swapping out the memory just happened to coincide with the problem fixing itself ^^
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post #5 of 8
Thread Starter 
So I just got off the phone with Canadacomputers in regards to the issue I'm having as I was trying to setup an exchange of motherboard.

The gentleman told me it is a memory issue but not faulty memory. He said they ran into the same problem when setting up their computers initially.

He advised the motherboard won't read the 2133 mhz memory when the bios is set to automatically read the memory and it will downlock it (currently my bios shows 1600mhz). So when the computer boots it reads the memory and shuts down, it will enter a boot cycle in order to lower the frequency and then it will boot.

Now last night it would boot right after a shut down right up, apparently the motherboard didn't have time to reset the frequency so it starts right up, but after sitting for a while the mb resets and has to downclock the memory.

He said go into the bios and change settings from Auto to XMP which will read the high frequency and fix the problem.

Does this sound like a logical answer, I will test it later but am currently at work so don't have access to my pc.
post #6 of 8
trick is getting into bios when its on a perpetual reboot loop >< but yeah gonna check that tonight before I RMA my ram, weird it would work with 1 stick but not 2
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CPUMotherboardGraphicsRAM
2500K Gigabyte P67 UD5 r7970 BEDD Corsair Vengeance 
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Crucial C300 256gb EK HF supreme full copper Win 7 Ultimate 120hz 1920x1080 23" LG 
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Ducky ocn edition 1000w Corsair hx Corsair 800D G9x 
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post #7 of 8
Thread Starter 
Ya I don't get stuck in a constant loop, it loops for 3/4 attempts and then boots.

Sounds like your issue might be a bit different than mine.
post #8 of 8
Quote:
Originally Posted by whitey_rolls View Post
Ya I don't get stuck in a constant loop, it loops for 3/4 attempts and then boots.

Sounds like your issue might be a bit different than mine.
Think its related but not the same probably is due to ram clock issues it just isn't fixing itself cos some of my ram is dud
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CPUMotherboardGraphicsRAM
2500K Gigabyte P67 UD5 r7970 BEDD Corsair Vengeance 
Hard DriveCoolingOSMonitor
Crucial C300 256gb EK HF supreme full copper Win 7 Ultimate 120hz 1920x1080 23" LG 
KeyboardPowerCaseMouse
Ducky ocn edition 1000w Corsair hx Corsair 800D G9x 
Mouse PadAudio
Steelseries I-2 AKG K702 
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CPUMotherboardGraphicsRAM
2500K Gigabyte P67 UD5 r7970 BEDD Corsair Vengeance 
Hard DriveCoolingOSMonitor
Crucial C300 256gb EK HF supreme full copper Win 7 Ultimate 120hz 1920x1080 23" LG 
KeyboardPowerCaseMouse
Ducky ocn edition 1000w Corsair hx Corsair 800D G9x 
Mouse PadAudio
Steelseries I-2 AKG K702 
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