I'm not quite sure what my good old G4 733Mhz quicksilver did do deserve all the abuse I've been giving it. After a brush with death (well, the data on the HD's had one anyway) I think I finally murdered it once and for all! Having done all the easy stuff like replacing harddrives, CD-ROM, memory etc. I had the brilliant idea that a processor-upgrade was just the thing. I therefore ordered a Dual 1,6 Ghz upgrade from Powerlogix/OWC. Being the cautious kind I read the instructions thoroughly, checked that the Firmware was OK and proceeded to install the card as instructed. I re-connected the 'puter.. and nothing happened. Well, the fans started blowing, there was some sound from the HD's but no chime and no image on the screen. I disconnected the machine and tried to see if there was anything wrong with my work but everything seemed OK. I tried using the reset-switch inside the machine but to no avail. Really starting to sweat I decided to try and refit the machine with the original 733Mhz G4, fan and heatsink. The machine reacted like it did with the Powerlogix card, that is it didn't react at all! If anyone can sort this out for me I would be eternally gratefull!