Kevin, Check your universal access pref pane. . . there is a key combination that toggles B&W mode on and off 'control-option-command-*' This is most likely your problem and solution . . . HTH. Rick >Hi all. >I'm running a Sawtooth G4 450DP, stock ATI rage128 video card, >1024mb ram, OS 10.2.5. > >I'm stumped... Last night I was surfing the net w/safari-1.0B2(v73) >and the beachball progression wheel came up. If the wheel lasts long >(which isn't often) I usually force a restart, but I got up did some >other things and let it run it's course. After approx. 10min. the screen >turned black & white - the beachball went pitch black but was still >present. I then hit the force restart button. > >Now when I restart, the Blue screen is present during booting and then >just as the desktop appears, fades to B/W. The display control panel >defaults to 256 colors when rebooted, but only displays B/W. When >I switch to Millions, there's a brief flash of blue and everything is then >"Inverted" (blue is yellow, etc.). When I make a screenshot, take it to >Photoshop and select "invert", it corrects it (on my inverted screen anyway). >This tells me that somehow the display software is using a negative >color pallet for some reason. I never changed anything, and everything, >until this event, has been fine for months. > >The only way I can get the display to display properly is to startup in >Safe Mode and starting up in OS 9.2 works also. So this proves that >it's not my monitor + it's been fine until the spinning beachball incident. > >Here's what I've done: >Reset pram, did a Cuda reset, Repaired permissions, Reinstalled OSX >10.2.5, Downloaded and installed latest drivers from ATI. > >Any other suggestions? is there a preference I can trash? >Could a problem with Aqua suddenly have cropped up (I can't utilize it >with the ATI Rage128 anyhow). >Like I said at the beginning.. I'm stumped. >