Hi, I accidentally clipped a resistor next to the CPU on this motherboard (MSI K7T Turbo ver. 3) while replacing the CPU. The resistor is labelled R629 Unfortunately the resistor in question could not be located. Does anyone know or have a schematic diagram for this motherboard so I can get the value of this resistor to have a go at replacing it. It appears since this happened the computer will not POST even when stripped down to nothing even with previous CPU - All red diagnostic LEDs remain on, all fans spin, power light lights and the cpu gets warm but nothing else happens. I've also noticed one of the capacitors appears to be "bulging" at the top. I will consider replacing this also if it becomes worthwhile.

Go to the manufacturer's web site and try to email or call them. That's your 0nly shot.

And that will be a waste of time. Motherboard manufacturers do not share their schematics with the public. Resistors have color codes on them that indicate their resistance. Do yourself a favor BACKUP!

Indeed they do - resistance is futile You are, once again, Microsoft's bitch

Is it one of those small (1-2 mm long) surface mount ones? If so, are you sure it's a resistor and not a capactor? They look the same--the only way to tell the difference is to see how it's described on the board. For example, C101 would be a capacitor and R101 would be a resistor. I've noticed that most motherboards usually use only 2 or 3 different capacitor/resistor values. It's likely there are some with the same value already there. As far as I know their size and color are the only way to match them. The last time that happened to me I found a trashed motherboard and removed a similar sized and colored resistor and soldered it in the place of the one I broke. The motherboard worked OK afterwards.

Go to radio shack or similar and buy say a 500Kohm adjustable pot. Put it in place of the resistor and start at the highest setting (500K). Try to post. If nothing then turn it down just a little and try again. Keep going until you hit the right resistance (it may take a while so make your self a nice big pot of coffee!) Once you have found the right spot on the pot then take it out and measure its resistance. This will be the resister that you need. DO NOT ZERO OUT THE RESISTANCE OF THE POT OR YOU MAY BLOW SOMETHING!!! The only guessing game is the resister wattage. 1/8, 1/4, or 1/2 watt. Usually they are 1/4 watt, but if you put 1/4 watt in and it starts to get quite warm then switch it to 1/2 watt. Good luck!

Hi, thanks for all your advice. I can confirm it is a resistor that came off but it is one of the small surface mount ones that have only a few letters (if any) on. There appears to be two other resistors next to and in-line with the resistor that came off. I have uploaded a picture which is hard to see as it became quite blurry but ive marked where I think the missing resitor should be. as the PCB line appears broken i.e. --(R629)-Rxxx-Rxxx-- hope that makes more sense. I'll try to get hold of a variable resistor and give that a go. Here is the link for the pic: http://i5.tinypic.com/20r1cwn.jpg as you can see it is directly next to the cpu heatsink bracket.