Brand new self built rig, problem, help!!

InexplicableXiu

InexplicableXiu

InexplicableXiu

Associate
Joined
28 Jul 2009
Posts
28
Hi guys, thanks for checking out my problem.
Some of you helped me spec my new system, totally new to PC building and i went at this on my own, my system is;
Intel Core i7 920 D0 Stepping (SLBEJ) 2.66Ghz (Nehalem) (Socket LGA1366) - OEM
Asus P6T Intel X58 (Socket 1366) PCI-Express DDR3 Motherboard
Coolermaster Silent Pro Modular 700W Power Supply
Antec 902 Nine Hundred Two Ultimate Gaming Case - Black (No PSU)
Corsair XMS3 6GB (3x2GB) DDR3 PC3-12800C8 (1600MHz) Tri-Channel (TR3X6G1600C8)
Samsung SpinPoint F1 320GB SATA-II 16MB Cache - OEM (HD322HJ)
Sony Optiarc AD-7240S 24x DVD±RW SATA Dual Layer ReWriter (Black) - OEM
BGF GTX 9800 1GB + OC


I've put everything where it should be (what im aware of)
Went to boot up and the PC light up and started to run, however there was no display on my monitor.
I took i checked it out, couldnt find anything so i took it apart and rebuilt it.
Only this time, it powered up, then powered down after 2 seconds, then a slight pause then it powered up again and repeats this until i turn it off at the wall.
Interestingly, when i unplug the gfx card It runs fine (without a display) then when i plug it in, it does the power up, power down thing.

Its really frustraiting not knowing if there is a fault or there is something i havent done properly.

With your advice, please explain it best you can since my knowledge doesn't go further that GPU, CPU, RAM etc... however, im not stupid and i can work things out pretty quick if the explanation is good.
Another odd thing was that the power lead they gave me is italian or american, just two pins, not a normal british plug, whats that all about ?

Cheers for your time gentlemen, really hope i you can help me solve this.

All the best.

Xiu
 
Last edited:
The most likely problem (in my experience) is that the power button connector from the case to mobo is the other way around. try switching it around and see.

But if thats not the case, the fault might be the gfx card

Oh 4/8 pin 12v cpu connector
 
Last edited:
Could it be one of the motherboard stand-offs slightly shorting? When the gfx card is plugged in then it presses down on the motherboard, causing the short. I had something similar recently (although not quite as regular as off/on/off). I realised one of the stand-offs was in the wrong place causing it to short occasionally.

Try taking the motherboard out of the case and re-build it on something non-static such as the anti-static bag it comes in. Then add in only the base essentials such as one stick of RAM, the gfx and one hard drive. Then see if it does the same. If it's ok then it indicates something touching the motherboard and causing a short when in the case.

Also check that you have all the power connections into the motherboard. I'm not familiar with i7 or that mobo but sometimes there is more than one power connector required.
 
InexplicableXiu said:
I took i checked it out, couldnt find anything so i took it apart and rebuilt it.
Only this time, it powered up, then powered down after 2 seconds, then a slight pause then it powered up again and repeats this until i turn it off at the wall.
Interestingly, when i unplug the gfx card It runs fine (without a display) then when i plug it in, it does the power up, power down thing.
Xiu
Click to expand...

Ahh i had this problem with my ASUS board. Its wattage calibration to the CPU. To make it past this and POST, Take the motherboard battery out for about 5 minutes then replace. This will clear the CMOS. Once the CMOS is cleared the wattage calibration will take place and then POST. :D

When your comp does this it means that someone from ASUS has tested the board prior to it being shipped to the supplier. (Nice to know the fellows check their boards) :D
 
ok, thanks for the help guys.
Its not a problem with the gfx card because i've tried two different cards on it, one of them being brand new.

I tried taking out the mobo battery for 5 mins, that didnt work.
I tried messing around with the power cables. They inputs are built in such a way that if its not the right place for it to go, it simply wont go in.
So its not that.

When i turn it on, the PC stays on without resetting, sounds and looks like a perfectly fine boot, but there is still no display.

Really on the edge with this one, worked on it for 7 hours straight and now it looks like it will be another day of doing so. :(

Any more advice guys.
 
Build it outside of the case on some cardboard or your anti-static bag like Hades said, you could be shorting (which happens to a lot of people on their first build).
 
Okay i've been around, apparently this is a common problem with the P6T, this particular problem hasn't yet been solved, The only solution i've found was on youtube and that was to do an RMA.
Does anybody know how to go about this ? Do i sent it back to OC or to Asus ?
 
Silly question, perhaps, but do you have all the necessary heatsinks and fans fitted properly? It could be that the system is starting up, overheating, shutting down, starting up, overheating, ...
 
InexplicableXiu said:
my gfx card has 6 plug port, with a smaller one of 2 plugs right next to it but i dont see anywhere for that to go, so its only got the 6 pin plug which goes into the PSU.
Click to expand...

This sounds to me like your GFX card requires an 8 pin PCIe power cable, and not just a 6 pin one...

Did your GFX card or PSU not come with a 6 to 8 pin PCIe adapter??

I am pretty sure this is your problem..
 
I don't know this for sure, I am just taking a guess mate, as you said there is "a smaller one of 2 plugs right next to it", so I had just assumed that you had fitted a 6 pin PCIe cable into an 8 pin socket..

I am only trying to give you advice to help you get your rig up and running... but if it worked fine in your old system with the same connectors then you can rule this out.. also I just checked BFG website, and from looking at the PCB of your card it only requires 1 x 6pin PCIe..

So forget what I said in my last post!!!!

Maybe you should just RMA the board,, leave OcUK a webnote explaining your problem..
 
LoL, no problem man, like I said, I was only making a suggestion!

Glad you got an RMA number sorted out, there is nothing worse than buying something that is faulty!!!

Hopefully it is the mobo that is bricked and not something else..

Good luck anyway mate, and I hope you get a speedy RMA! :)
 
You must log in or register to reply here.
Back
Top Bottom