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Nvidia 680i lt boot up problem

iJatt

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C2D E8400
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I have a bfg tech 680i lt motherboard (A1) , the bios has been fully updated to the latest version by BFG so my cpu is supported. I do not get any POST, i do not have any peripherals connected to make debugging easier. I realize my board has a aux pex molex connector, i never tired plugging my molex connecter into that. I have a 4 pin cpu power connector, although the mobo asks for a 8 pin. I plugged in my 4 pin ( only one way it fits) and no post. when i start my pc, yellow, green and blue L.E.Ds light up though. I think it was orange and green but im sure bout blue. I do know for a fact that 3 LEDS lit up on each startup. I have yet to clear CMOD and plug in the molex connector thing...it says its used to supply extra power to the mobo or gpu, so maybe that would help right?
tomorrow i will use my friend old socket775 cpu to test if will work with that, if it does then that means either they didnt update bios or my e8400 needs more voltage.

EDIT: I took one of my molex connection and plugged it in on the on board aux pex thingy. No luck still
My friend is lending me his old socket 775 cpu in the morning so i can test if the mobo is alive or dead, the bfg tech guys told me that it was fully tested and what not before it left the warehouse and it does have latest bios...blahh hopefully it will work with the old cpu.
Two things will happen: either my mobo is not flashed with the latest bios to support my wolfdale or my e8400 needs more voltage via 8 pin since i only have a 4 pin
someone please help me find a solution.
 
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try lower CPU voltage and underclock your E8400 if you can boot into bios with it.
 

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try lower CPU voltage and underclock your E8400 if you can boot into bios with it.

do tell how he is supposed to lower the voltage, if the machine wont power on?

Ijatt: your diagnosis is correct. Either the BIOS is outdated and doesnt support the CPU, or the motherboard requires the 8 pin connector. That fits with your assesment.

However, no-POST scenarios can also be video card and memory related, so please dont rule those out. You should borrow spares of them off your friend at the same time.
 

iJatt

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I placed my friend Pentium d 820 cpu into the mobo and guess what, it boots up fine. I went into bios and set load default bios just to reset it back to its original state.

So now i know my video card works, memory works, cpu works but not my wolfdale only the older cpu

remember guys i only had a 4 pin plug for the cpu power socket not an 8 and it booted up fine!!!!!
when i do this with my e8400 and plug inthe 4 pin to the mobo, i do not see anything... i might need a 8 pin to powerup my e8400? or did they not do a bios update which they said they are 100% sure they did

btw i know my e8400 is not dead because i just used it on my other pc

EDIT: i added a picture of what my post screen looks like, how can i find out if they updated to latest bios?
 

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iJatt

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i just spoke to the cunts at bfg tech and they told me that my mobo doesn't have the latest bios on it.

i'd agree cause the bios are dated 03/27/07

gg bfg
 
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Update your bios. Does the 680i support 45nm CPU's?
 

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Update your bios. Does the 680i support 45nm CPU's?

Only with a BIOS update they can support them.(not the 45nm Quads tho, only Duals)
 
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CDdude55

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iJatt

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i have a flash drive. Do i reformat the flash drive, put 721N1P08.iso on it and then go into bios with my old cpu and set boot device to removable usb device? and then just boot the pc and do what it says?

do i need the iso in the flash drive or just the bin file? should i modify the iso in any way?
 

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you could just burn the ISO to a cd
 

iJatt

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i did that last time and mobo died. can u guide me via usb please?
 

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i did that last time and mobo died. can u guide me via usb please?

You must of did something really wrong if you burned the ISO to a CD and your Mobo died.
 

iJatt

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okay guys i have gotten everything to work, i did a bios update via usb....new problem though

my e8400 is idling at mid 40's when it suppose to be doing low to mid 30's because i had this cpu in my last mobo and it did that

it might be thermal paste for my cooler master, haven't re applied anything since i got the cooler...but still there is oem thermal paste on it already and it seems enough...anyone know what could be wrong here?
 
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Is the motherboard overvolting the CPU? Is your room temperature warmer than usual?
 

iJatt

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bios shows cpu core to be 1.12 volts and cpuz says i idle at ~.992 v to 1 volt and coretemp says VID: 1.16 volts

room temp is 78 degrees Fahrenheit with one fan on ceiling running.

My cores are both running properly, can assure of that . its just cpu temp is being weird.
 
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OEM thermal paste is crap. Usually dried up and not very good. Try reapplying with some fresh MX2 or AS5. Either way your Voltage is superb.

My guess is your heatsink isn't seated correctly or the thermal paste is bad. What cooler are you using? Push pins or bolt through kit?
 

iJatt

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i am using a coolermaster Hyper TX 2
http://www.coolermaster.com/products/product.php?act=detail&id=2535

I have arctic silver ceramique thermal paste but didn't use it for some reason lol. My friend said i just have to clean of the old paste and just put some of arctic silver in the middle of the cpu and apply heatsink and stress test cpu for 5 mins with max load and it will spread out. ..

is that the correct way?
 

iJatt

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alright so i just applied some arctic silver thermal paste and no sign of temp change, well it went down by 1-3 c but still nothing comforting.
 
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Good, the better paste will help with load temps the most.

Any fan control on that cooler? Ramp it up to 100%
 

iJatt

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it automatically runs at 100% but i will go into bios and just make sure of everything.

I did occt testing right now for 5 mins and i maxed out at 63 C cpu temp and my cores maxed out at 53 C

the core temp is normal because on my last mobo the cores maxed out at 53 C as well and cpu was below 50 C on full load

What could it be really? could it be that my cpu needs all 8 pins connected to cpu power socket even though i only have 4 and it works perfectly fine

or is it a driver/mobo/sensor issue?
 
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I have a 680i board that had higher temps than my brothers x38 orx48? board with the same CPU and found that the CPU socket/CPU retainer on my 680i board was tweaking the IHS on my CPU just slightly when clamped down and made a low spot in the middle of the CPU where the heatsink would not touch, unless I applied a big gobb of thermal grease.. If you TRUST your cpu/heatsink retainer, you can try a temporary test; lay the computer flat on a table; so the motherboard is horizontal; remove the CPU retention bracket from the hinge and hold the CPU down with just the pressure of the heatsink retainers.. Use thermal grease, like as5; and the credit card application method, keep the motherboard oriented horizontal while testing your temps and see if there's a difference, if you had a bolt down heatsink like I do, you could leave the cpu bracket off and then set your computer back up on the case feet.. Just be VERY carefull when installing the cpu and heatsink, do not move the heatsink at all after it has made contact with the CPU because it will lift it right out of the socket.. When removing the CPU heatsink after the test, be carefull to lift straight up and you will find your CPU stuck to the base of the heatsink, install the plastic pin pad cover over the cpu and then slide the cpu off the side of the cpu heatsink..... This works VERY well on my 680i board, I was getting random blue screens of death even with a good contact patch of thermal grease while using the socket cpu retainer bracket, but it required excessive thermal grease.. Without the socket retainer bracket, I could use much less cpu thermal grease and keep a very flat contact patch on the IHS and no bsod's and the temps were a good 8-10C lower
 
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