Chosen Solution
Powers on, (the input panel lights up and the fan spins), but, never shows video … and eventually just shuts down. (I actually attempted resetting the PRAM but was unable to get it to do so, thus, never got a chime out of it … but I bought it from a good customer ‘non-operative’ who’s at LEAST savvy enough to attempt swapping memory modules.) I’ve disassembled it, and actually have replacement CPUs (and RAM of course) I could swap out to check what the issue is; the only thing I don’t have is a GPU. Though, I’m curious, would this unit work with ONE GPU..? If so, I could disable each GPU while using the other to see if that’s the issue …. Or, are there other ‘more likely’ candidate issues ..? Thanks
The GPU’s are not the same! One is the dominant the other only becomes active when the driven to do so. So you can’t alter things. So when did you encounter the issue before or after you upgrade the CPU?
