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Please help: My motherboard gets power but no output or POST beep

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clockworkjames:
So I sold my old e6600 to a friend and bought a shiny new q9550 for my system, put it in but would turn on with now output. Put the old CPU in but same thing happened, was in a rush to get out so I thought no biggie, I will fix it when I get back.

Processor is a q9550, memory is corsair xms2 6400(fancy old dhx stuff) GFX cards are 2 9600's.

At LAN I had the problem once that I had no signal but when I tried the other DVI port on the secondary card it worked fine, I am currently running the mobo on my desk withthe bare essentials hooked up, 1 stick of memory, CPU, 1 GFX card and still it powers on fine, then lights on the mobo when the PSU is plugged in, then the other light comes on when I cross the pins (screwdriver). There is no beep, I used an old little mobo speaker to test but it doesn't beep at all, like no series to indicate a fault but no single beep to indicate POST. I tried both my GFX cards but it makes no difference, there is nothing on screen and now I am wondering if the speaker could be not working and I am starting to get more than a little pissed off. I have resetted the CMOS by the button on the I/O at the back and also by leaving the battery out while the psu is unplugged and then I went away for a shower.

Nothing I have tried works and need some insight as to what I have not tried or could be the problem.

Oh and the mobo is a MSI p7n sli platinum.

Thankyou.

KvP:
Are you able to get the mobo replaced? When I built my rig I received a bum mobo, initially. Got a replacement from Newegg in a week.

Melodic:
Which chipset does the Q9550 use? You'll probably have to update your BIOS.

clockworkjames:
RMA on my mobo is a last resort as I am not entirely sure it is at fault. The q9550 runs fine on a 750i nvidia chipset and the mobo can take a 45nm chip so no compatability issues, as for going from a 65nm e6600 to a 45nm q9550 resetting the cmos should have done the trick.
Thanks for the replies guys, I appreciate the effort :) as I am really up shit creek at the moment.

DonInKansas:

--- Quote from: clockworkjames on 08 Nov 2008, 12:50 --- The q9550 runs fine on a 750i nvidia chipset and the mobo can take a 45nm chip so no compatability issues, as for going from a 65nm e6600 to a 45nm q9550 resetting the cmos should have done the trick.


--- End quote ---

Not neccessarily; just because it can take a 45nm chip doesn't mean you don't need a BIOS update to do so.  Most boards even needed an update after the E0 45nm chips came out.  Of course, this doesn't explain no POSTing with your e6600. What bios version are you running?

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