Asus M2N-E SLI **Problem** CPU Fan

Hey all.
A couple of days ago i bought some new parts.

-new bits-
Asus M2N-E SLI mobo
AM2 4400 + CPU
1Gb Corsair DDR2.
-old bits-
PCI-E Gigabyte GeForce 6600GT
2 x 200gb SATA HDD
2 x 200gb IDE HDD
1 x Samsung DVD
1 x Pioneer DVD-RW

----------------------
got the pc all put together, plugged in the PSU (Antec 350w <came with
the super lanboy case>)
the led on the motherboard went green.
pressed the on button....
nothing ---- no psu fan spinning, no cpu fan spinning, no hdd ticking
over
absolutely nothing.

verified all the connections.
removed every component except for cpu, mobo and ram.
still no good.
cleared cmos,
tried again - no good.
removed the board from the case, put on cardboard. tried again. no
good.
--------------------------
day 2
--------------------------
took my pc to a friends place and plugged his 400w power supply in.
bingo. psu fan spins.. hdd's tick over.
no beep. no post.
i turn it off.. and turn it on again.
i watch and notice the cpu fan spins for 3 seconds and stops
this happens everytime i turn it on.
tried all the diff steps again,
grounding the board on cardboard, clearing cmos, removing all
components. including ram.
reducing it to just board/cpu. still the same thing
.........

so this brings me to today. i'm completely stumped.
the cpu fan is a 4 pin connecter which is plugged into the board.

what is the most likely cause.
is a 400w power supply not enough to power this board/cpu combo?
is the board faulty, is the cpu no good?

any help would be greatly appreciated.
thanks in advance.

<> wrote in message
news: oups.com...
> Hey all.
> A couple of days ago i bought some new parts.
>
> -new bits-
> Asus M2N-E SLI mobo
> AM2 4400 + CPU
> 1Gb Corsair DDR2.
> -old bits-
> PCI-E Gigabyte GeForce 6600GT
> 2 x 200gb SATA HDD
> 2 x 200gb IDE HDD
> 1 x Samsung DVD
> 1 x Pioneer DVD-RW
>
> ----------------------
> got the pc all put together, plugged in the PSU (Antec 350w <came with
> the super lanboy case>)
> the led on the motherboard went green.
> pressed the on button....
> nothing ---- no psu fan spinning, no cpu fan spinning, no hdd ticking
> over
> absolutely nothing.
>
> verified all the connections.
Have you got the 'extra' power connection made?. The board won't start
without this.

> removed every component except for cpu, mobo and ram.
> still no good.
> cleared cmos,
> tried again - no good.
> removed the board from the case, put on cardboard. tried again. no
> good.
> --------------------------
> day 2
> --------------------------
> took my pc to a friends place and plugged his 400w power supply in.
> bingo. psu fan spins.. hdd's tick over.
> no beep. no post.
> i turn it off.. and turn it on again.
> i watch and notice the cpu fan spins for 3 seconds and stops
> this happens everytime i turn it on.
> tried all the diff steps again,
> grounding the board on cardboard, clearing cmos, removing all
> components. including ram.
> reducing it to just board/cpu. still the same thing
> ........
>
> so this brings me to today. i'm completely stumped.
> the cpu fan is a 4 pin connecter which is plugged into the board.
Is the CPU fan a three wire fan?. The motherboard will switch off, if it
doesn't see the 'tacho' signal from the fan (the third wire), or if the
CPU gets too hot. This can happen vey quickly indeed (three seconds is
about normal, if the fan is not making good contact to the top of the
CPU).

> what is the most likely cause.
> is a 400w power supply not enough to power this board/cpu combo?
> is the board faulty, is the cpu no good?
>
> any help would be greatly appreciated.
> thanks in advance.

Best Wishes

> Have you got the 'extra' power connection made?. The board won't start
> without this.
>
> Is the CPU fan a three wire fan?. The motherboard will switch off, if it
> doesn't see the 'tacho' signal from the fan (the third wire), or if the
> CPU gets too hot. This can happen vey quickly indeed (three seconds is
> about normal, if the fan is not making good contact to the top of the
> CPU).
>
> Best Wishes

nah the cpu fan is a 4 wire... goes into the 4 pin socket on the
board.
ill try reseating the cpu fan/heatsink and see what happens.
could possibly be overheating in that time. very good point.

yep both power connectors are made from psu to board.
the 20 connector
and the small square 4 connector firmly plugged in.

but would the fan stop spinning if the cpu overheats?
the cpu fan stops, and the psu fans, the case fans and the video card
fan all continue to spin.

cheers for the suggestion. ill try that tomorrow or friday when i go
back to my friends place.

<> wrote in message
news: oups.com...
>
>> Have you got the 'extra' power connection made?. The board won't start
>> without this.
>>
>> Is the CPU fan a three wire fan?. The motherboard will switch off, if
>> it
>> doesn't see the 'tacho' signal from the fan (the third wire), or if the
>> CPU gets too hot. This can happen vey quickly indeed (three seconds is
>> about normal, if the fan is not making good contact to the top of the
>> CPU).
>>
>> Best Wishes
>
> nah the cpu fan is a 4 wire... goes into the 4 pin socket on the
> board.
> ill try reseating the cpu fan/heatsink and see what happens.
> could possibly be overheating in that time. very good point.
>
> yep both power connectors are made from psu to board.
> the 20 connector
> and the small square 4 connector firmly plugged in.
>
> but would the fan stop spinning if the cpu overheats?
> the cpu fan stops, and the psu fans, the case fans and the video card
> fan all continue to spin.
Yes, it goes off completely.
Once the system is actually 'running', it'll throttle parts of the CPU as
it overheats, but during boot, it is a complete 'stop'.
I have met it where a guy fitted a non standard oversize heatsink, and it
was resting on one of the capacitors near the CPU, so was not 'down' on
this side...

> cheers for the suggestion. ill try that tomorrow or friday when i go
> back to my friends place.

Good Luck

wrote:
> Hey all.
> A couple of days ago i bought some new parts.
>
> -new bits-
> Asus M2N-E SLI mobo
> AM2 4400 + CPU
> 1Gb Corsair DDR2.
> -old bits-
> PCI-E Gigabyte GeForce 6600GT
> 2 x 200gb SATA HDD
> 2 x 200gb IDE HDD
> 1 x Samsung DVD
> 1 x Pioneer DVD-RW
>
> ----------------------
> got the pc all put together, plugged in the PSU (Antec 350w <came with
> the super lanboy case>)
> the led on the motherboard went green.
> pressed the on button....
> nothing ---- no psu fan spinning, no cpu fan spinning, no hdd ticking
> over
> absolutely nothing.
>
> verified all the connections.
> removed every component except for cpu, mobo and ram.
> still no good.
> cleared cmos,
> tried again - no good.
> removed the board from the case, put on cardboard. tried again. no
> good.
> --------------------------
> day 2
> --------------------------
> took my pc to a friends place and plugged his 400w power supply in.
> bingo. psu fan spins.. hdd's tick over.
> no beep. no post.
> i turn it off.. and turn it on again.
> i watch and notice the cpu fan spins for 3 seconds and stops
> this happens everytime i turn it on.
> tried all the diff steps again,
> grounding the board on cardboard, clearing cmos, removing all
> components. including ram.
> reducing it to just board/cpu. still the same thing
> ........
>
> so this brings me to today. i'm completely stumped.
> the cpu fan is a 4 pin connecter which is plugged into the board.
>
> what is the most likely cause.
> is a 400w power supply not enough to power this board/cpu combo?
> is the board faulty, is the cpu no good?
>
> any help would be greatly appreciated.
> thanks in advance.
>

I had the same problem. I wound up buying a second CPU and a second
power supply, so I could narrow it down to a mobo problem. The first
three mobos never posted. Finally, they sent me one that posted and the
system came up fine--for four days, when it stopped before I could go
into the BIOS. It had overheated (by one degree) before. I have the
BIOS and will tear the machine apart for the tenth time tomorrow. Most
of the time the tech will be reasonable, especially with Asus. But I
talked to one who said, in effect, don't call me unless you get the same
results with another CPU and another PSU. If that happens, hang up and
call again; talk to someone else.

I wonder about the 400 watt PSU. You should have 30-35 amps on the 3.3
and 5v rails. If you read the leads with a digital voltmeter, the DC
reading ought to be within 5% of the rated voltage for each rail.
Sometimes they're not. Your PCI-Express has an extra power connecter;
some PSUs don't have this. And, of course, the mobo has that four pin
connector.

My heatsink came with my retail boxed CPU and had three pins which went
on the four-pin mobo connector.

Just to update my last post: The BIOS came, I installed it and have now
beat my previous record of four days!

So, it has been 5 months, 3 PSUs, 4 mobos, 2 BIOSs, but it's running now.

I held out to try to get it running because I was still getting support out
of ASUS, most of the time no questions asked and most of the time they
picked the phone up right away! The ASUS group is across the river from
Louisville, KY. They didn't build the boards. They were built in China (my
first three boards wouldn't POST). Anyway, I didn't know of any reason why
anyone else would take care of me better in the long run, so I stayed with
ASUS. Besides, I wanted the many features the mobo had.

So now it's working great. I just installed Windows DreamScene (movies for
wallpaper) and I really like the look of the flowing brook dancing on my
desk. And I just downloaded the 209MB SP1 for Flight Simulator X. I went
for a system that was just above middle in quality/price and FSX works very,
very smoothly on this system.

John



"John" <> wrote in message
news:O-...
> wrote:
>> Hey all.
>> A couple of days ago i bought some new parts.
>>
>> -new bits-
>> Asus M2N-E SLI mobo
>> AM2 4400 + CPU
>> 1Gb Corsair DDR2.
>> -old bits-
>> PCI-E Gigabyte GeForce 6600GT
>> 2 x 200gb SATA HDD
>> 2 x 200gb IDE HDD
>> 1 x Samsung DVD
>> 1 x Pioneer DVD-RW
>>
>> ----------------------
>> got the pc all put together, plugged in the PSU (Antec 350w <came with
>> the super lanboy case>)
>> the led on the motherboard went green.
>> pressed the on button....
>> nothing ---- no psu fan spinning, no cpu fan spinning, no hdd ticking
>> over
>> absolutely nothing.
>>
>> verified all the connections.
>> removed every component except for cpu, mobo and ram.
>> still no good.
>> cleared cmos,
>> tried again - no good.
>> removed the board from the case, put on cardboard. tried again. no
>> good.
>> --------------------------
>> day 2
>> --------------------------
>> took my pc to a friends place and plugged his 400w power supply in.
>> bingo. psu fan spins.. hdd's tick over.
>> no beep. no post.
>> i turn it off.. and turn it on again.
>> i watch and notice the cpu fan spins for 3 seconds and stops
>> this happens everytime i turn it on.
>> tried all the diff steps again,
>> grounding the board on cardboard, clearing cmos, removing all
>> components. including ram.
>> reducing it to just board/cpu. still the same thing
>> ........
>>
>> so this brings me to today. i'm completely stumped.
>> the cpu fan is a 4 pin connecter which is plugged into the board.
>>
>> what is the most likely cause.
>> is a 400w power supply not enough to power this board/cpu combo?
>> is the board faulty, is the cpu no good?
>>
>> any help would be greatly appreciated.
>> thanks in advance.
>>
>
> I had the same problem. I wound up buying a second CPU and a second power
> supply, so I could narrow it down to a mobo problem. The first three
> mobos never posted. Finally, they sent me one that posted and the system
> came up fine--for four days, when it stopped before I could go into the
> BIOS. It had overheated (by one degree) before. I have the BIOS and will
> tear the machine apart for the tenth time tomorrow. Most of the time the
> tech will be reasonable, especially with Asus. But I talked to one who
> said, in effect, don't call me unless you get the same results with
> another CPU and another PSU. If that happens, hang up and call again;
> talk to someone else.
>
> I wonder about the 400 watt PSU. You should have 30-35 amps on the 3.3
> and 5v rails. If you read the leads with a digital voltmeter, the DC
> reading ought to be within 5% of the rated voltage for each rail.
> Sometimes they're not. Your PCI-Express has an extra power connecter;
> some PSUs don't have this. And, of course, the mobo has that four pin
> connector.
>
> My heatsink came with my retail boxed CPU and had three pins which went on
> the four-pin mobo connector.

well as an update...

i wound up testing the board out again. still no luck
got fed up and had the morning off work to go to the computer store.
left it there for the day so they could test it...
turns out it was a faulty board.

which they happily replaced for me.

bought a new power supply anyways, just wanted a bit more beef... got
home. and now my video card **** itself. lol
went in next day. new video card. got very cheap mind you.

finally got the beast up and running.

i don't know if it's the store i buy from
or asus.
but last time i upgraded i got the a8n-sli.. first board had a faulty
chipset which got replaced
and this time with the m2n-e sli. that was faulty and got replaced.

but gotta hand it to MSY.
they got cheap parts, and are pretty helpful.
be heading back there next pay to get myself a second. 256mb 8600gt,
and see what sorta sound card i can get myself. but thanks everyone
for ya help.