After installing new ZIF processor the computer went nuts, completely zonked. I gave up and reinstalled , it was still crazy. This sounded like some of the situations related to the PRAM battery that I had noted on lists so I shut down, unplugged and let sit for six hours. Then it started up normally and nothing had been lost. I will try again after arranging a bootable back up of some kind as I could not get to my slaveto use back up. Wonder if anything would work while the machine is wonked . Also will install a new PRAM battery. Following is summary of steps taken and machine description. Did I do something to cause this reaction and is there anything I can do to fix it when I try to install again? All insights will be appreciated. ----- Installation notes; OWC Mercury G3/533M Hz ZIF Installed/set jumpers for 533 MHz , 66 MHz buss speed (jumpers on J3,J4,J5,J6,J7.) installed G3 ZIF processor Start up: got rolling message² can¹t open...can¹t open...² Zap PRAM, hit Cuda, repeat several times. same message ³can¹t open² Gave up Reinstalled original ZIF and jumpers Zap PRAM and Cuda, try to start , won¹t start. try os9 and osX discs, no joy, got broken mac, broken ribbon, etc. Acts completely wonked, Nothing works. Unplugged and let sit 6 hours. Start up: everything normal, no data lost. ------- Beige DT G3, 233 , 10.2/9.2.2 s/n HB744WGBBV, ROM REV$77D.45F6, 768 RAM, 80 GB Maxtor master partitioned 7.9 gb for X/ 9 gb for os 9/ bal storage , Slave 20 gb Maxtor not partitioned contains full Retrospect back up. External 40gb Mercury Firewire. (3)PCI slots - (1) usb, (1) Firewire -XLR8, (1) open-will be used later by Raedon 7000 MAC Edition, onboard Monitor 17" ViewSonic, Epson 980 Printer (USB), Microtek ScanMaker V6-USB, ZIP 100 (SCSI).