My computer wont sleep.

Question

thanks to everyone for the many-varied-suggestions...
But the answer was that my monitor was in it's 1st throws.
It finally went black screen, no dot,
I replaced it, and bingo presto, the computer sleeps just fine, and there's no funny error mesgs showing up, etc.
I'm writing this to finish out the post with the correct answer.
other suggestions included:
The computer comes with a Silver CD that says Apple Hardware Test, you can boot off that by holding C Key and run tests to see what is up - also have you run the system profiler to see if that sees the disk?
How do I trash all my prefs ? sounds like a place
to
start.
Maybe, but it may be worthwhile to go to the next Step
suppose the 2nd drive is still OK. would software
restore simply restore OS9 ?.. or.. would it wipe
out all files.
It has been awhile since I did a OS 9 install (about to do one on my old iBook to clean it up) but there are a few options (if I recall, guess I finally adapted to OS X), one where you can zero out the drive (do not do that) and others where it is save the old system then install clean. (The only issue is you may have to drag/reinstall apps or reauthorize) BTW I thought I saw you mention running 9.1? 9.2.2 was alot more stable release for me at least.
should I disconnect the 2nd drive and THEN restore
os9?
then try to connect/install like I did in the 1st
place.
Probably not needed
how old? .. 2000. 128 mb ram [I've since added 2x
that]
Was that recent?
on the other hand...
what if it is a ram chip. should I take them out
and
re-install one at a time?
Yes best way is to go to original chip then keep adding
What I would do (just because I open up my case usually at last stages and these steps are quick, pretty much in the following order)
1.) Zap, excuse me, I mean reset PRAM see if that helps, if not
2.) Start with extensions off, see if that helps
3.) See if the system profiler sees the HD, if not seen check connections to HD, just in case
4.) If the profiler sees it, see if Apple Disk Aid works
5.) If it is seen and Step 2 does not work, or it is not seen and connections are okay, Diskwarrior or old Norton (SystemWorks 1 was okay if I recall, anything after run away, anything before okay.)
6.) Boot from a Firewire drive if you have one with OS installed and see if the missing disk comes up
If you do not have items in 5, and 6 works, probably something amiss in the OS and a clean install probably best move (though you can try Diskwarrior or Norton still if you do not want to go through all that)
If none of those work, then start pulling RAM chips, especially if the RAM is relatively new (you mentioned you added some)

Answer 1

Make sure you set the computer to 'never sleep' in system preferences.
The last thing you want a DVD authoring system to do is to go into sleep mode