A couple of things to consider: 1) Did you press the CUDA switch after you set the processor? On the QS it is near the PRAM battery. 2) Did you ground yourself and the QS while working on it? Were there any static sparks? That would be the worst case scenario, that you damaged the mobo. Since #2 would be fatal let's hope for #1! Put the dually in, press the CUDA button and hold it down at least 5 seconds. For good measure you can hold the ?-Option-P-R keys to reset the PRAM. A few chants and/or arcane gestures wouldn't hurt either.
Ah, the QS mobo. It is very fragile. I have broken several. My issue was dropping a screw, yeah a screw, which scratched one of the traces. NP. Number 2 pencil and repaired. It worked fine for a while...but I was doing some serious overclocking with no concern of breakage. It finally died. Tried the pencil again and no go. So, with that, scan over the traces just in case...mostly in the large empty part of the mobo.
Xplain's use of MacNews, AppleCentral and AppleExpo are not affiliated with Apple, Inc. MacTech is a registered trademark of Xplain Corporation. AppleCentral, MacNews, Xplain, "The journal of Apple technology", Apple Expo, Explain It, MacDev, MacDev-1, THINK Reference, NetProfessional, MacTech Central, MacTech Domains, MacForge, and the MacTutorMan are trademarks or service marks of Xplain Corp. Sprocket is a registered trademark of eSprocket Corp. Other trademarks and copyrights appearing in this printing or software remain the property of their respective holders.
All contents are Copyright 1984-2010 by Xplain Corporation. All rights reserved. Theme designed by Icreon.