I am the recent owner of a "new to me" Z600 with the C2 revision motherboard. Specs are pretty basic with one E5640, 6GB (3x2gb) unbuffered ram, a 250gb SATA2 HD, a DVDRW, and a single NVIDIA Quadro 2000. The machine posted the first two times without incident and I booted a live CentOS 7 CD and everything was working fine, so I installed it and everything went perfectly. In fact, I can't recall such an easy linux install, ever. Then, I rebooted again and entered the BIOS to enable hyperthreading. While in the BIOS, the genius in me could not help but play around. At some point I enabled compute for both of the x16 slots. I know, I know, big mistake. When I rebooted again, I was introduced to the six beeps of death. To me enabled meant allowed, not mandatory. I reseated the card, cleared (or attempted to clear) the CMOS and the offending setting about a hundred times following the official procedure then any other I could find to no avail. I found a thread with the exact same issue which mentioned having to wait for the stored energy in the system to bleed off and pressing the power button several times before pressing the CMOS reset button. It worked for others; but, not me. I have tried everything, moving the card, changing the card to one that supports CUDA (but, I enabled both slots...), I have powered down the machine, unplugged the power cord, removed the power supply, waited 8 hours, pressed the CMOS reset button for 10 seconds, three times and I still have the six beeps. Unless my machine contains some secret alien technology, I am lost. How do you clear the CMOS? I have tried every procedure, theory, guess, chant, and encantation I know. I started building computers when Jimmy Carter was Preident and I have seen it all, almost. The only other option I can see is a PCI 1.0 VGA card so I can get back into the BIOS. Any ideas or advise would be appreciated. It's a great machine and I want it back!
