My computer 8500/180 i have put a newer technology G4 in late July and operating system 8.6. Until two weeks ago things were decent but now The computer wont boot it turn on but the sound of it is not full speed ahead plus the monitor doesn turn on its NOT FULLY booting wont boot for at least an hour I turn it on and off for an hour before at least at first it was 1 or 2x before it turned on. As you can imagine its painful. Has anyone encountered anything like this. I ran norton disk doctor I also I refered to the manual it says reset PRAM did that. I talked to a Apple consultant he says possibly the processor card I dont understand though had it for 3.5 months and has been fine until recently and not to boot real weird Could it be the battery 3.5v lithium inside. or something to do with the VRAM not want to kick start the monitor. I am really stumped.

Wouldn't hurt to change the battery. It's a possibility. If this doesan't help, take the Newer card out and try booting.

Reverse any changes that were made on the system from the time that it was working fine to the time that it does not work. Someone probably changed something somewhere on the system which is causing the slowdown. Also, try booting from CD (put in the OS disk and hold down the C key). If it boots fine from the CD then it is the hard drive that is causing the problem. If your main drive is nearly out of space this could be an issue. If booting from CD causes the same issues, then the problem is probably with the battery or logic board.