ASUS P6T has no No video on power up

try default settings in the bios, or a bios update

also, depending on the cpu you use, you may need the update :  http://support.asus.de/cpusupport/cpusupport.aspx?SLanguage=en-us&model=P6T&product=1&os=17

don't see anything about initial display settings, working on the update

bios update didn't help either

seems a bad mobo to me; have it exchanged

What is wattage rating of system SMPS..mention here

how many hardware attached to ur system,,, list here..

it could be SMPS cant take up system until filter capacitors fully charged...

or if u could do just cross check with high wattage smps..

What is wattage rating of system SMPS..mention here - 550

how many hardware attached to ur system,,, list here..
2 1tb hard drive
1 floppy
1dvd
1 monitor
1GEForce 210

or if u could do just cross check with high wattage smps..

The only question I would have, if it is the power suply why does it work evertime after I push the reset button on the Motherboard?

well, it can be a bad cpu also, but far more chances it's the mobo

as i mentioned, it could cause of filter capacitors of SMPS....when u starts ur system,,, SMPS starts power according to requirement of hardware,,,,but cause of faulty SMPS filter capacitors,,,, system shutdowns cause, it cant take enough power from smps.... or pressing reset button it will starts as a cold boot condition..

well, for surity,,,, u can cross check,,, whether its really smps problem or something else..

bad capacitors are not likely on a new mobo - but it may just be bad...DOA

I replaced the Motherboard and replaced the poersupply with a new larger one, same problem.

what cpu do you have ?
for some, it can be it needs a bios update (happened to me several times) :
http://support.asus.de/cpusupport/cpusupport.aspx?SLanguage=en-us&model=P6T&product=1&os=24

CPU is a Intel Core i7 920 2.66 GHz, the motherboard has had the latest Bios update applied

well  it leaves only mobo or PS
can you test with another power supply?  (i don't think it needs 550 W)
calculate what you need : http://www.extreme.outervision.com/PSUEngine      

I all ready replaced the power supply see my comment 11/08

No joy

What's the possibility it has anything to do with the CPU?

not much; failure rates of cpu are about 5% opposed to mobo = 95% or PS
personally, i would replace the mobo first -i've had quite a few DOA's with them !

make sure whether keyboard is working when video not wokring...

check on first attempt when video goes off,,, press keyboard num key,,,, and check for num led... if its on/.off.


did  u try alternate pci-eX16 slot,,,, for ur graphics card ?

try to alternate slot

I replaced the mobo once and had them test it before I left the store, it worked correctly there and didn't when I installed it at home.
I replaced the power supply and received the same problems
I've used every pci-ex16 slot on the boeard same result
I've used at least 3 graphics cards same result
I've replaced the memory, same result
The only thing left is the CPU, but don't understand why using the reset switch on the mobo would affect what the cpu does

thx

i can only say it's the only thing left, if everything is connect correct (we can't see that)

ram, cpu, psu, mono swaped ! still problem exist,,, its very strange

Trying to find a speaker to see if there are any beeps when the machine has the problem, not real easy thing to find.

look in the pc shops around, they shouyld have them !

Quetion not abandoned

With a speaker hooked up this is what I get

Machine powered up no beeps, the machine does not come up
Push and hold external reset switch for 4 seconds, there are no beeps and the machine does not come up
Push and hold the reset switch on the motherboard for 4 seconds there is a single beep and the machine comes up

If I push the reset switch without holding it for at least 4 seconds I get no beep and the machine does not come up.

Any ideas?

the reset and power-on switch connections are not swapped?  looks like it

The power on and reset switch are connected correctly.  I get the same result if I use the power on switch from the motherboard, i.e.
not beeps unless I hold the reset switch down for 4 seconds

never heard that scratching my head... :
can you try another PS ? or another cpu or mobo ?
and if you disconnect both switches, and short momentaryly the pwron connection on the mobo - no start either?
you can also swap the switch connections (and use the power on switch then instead of the reset)

I thought the next thing I would do is pull the motherboard and hook up the essentials outside of the case and see if the monitor works at power.

If that doesn't work I'll replace the motherboard again and verify it step by step outside of the case.  I've been reading a lot on various board that these boards have this problem, maybe you just have to keep trying them until you get one that works.

thx

that surely is not a bad idea. post results !

Well I completely rebuilt it with yet another motherboard.  This time I tested it outside of the box with only the CPU, CPU fan and video card hoooked up........same result.  

I'm out of ideas

Never got a reply from ASUS, customer service really bad, won't buy them again.

Thanks for the help