8100/100 issues

[ken27238]

before I tell you the actual problem let me tell you what i did that led up to me experiencing the problem.

So I found some software that I wanted to put on it, but of course it doesn't have a USB port so I did what i do with computers that have no USB. I take out the hard drive and attach it to the SCSI card in my Power Mac G4 (main machine) I start up the computer and it mounts as usual and I extract and put the software on it.....end of story

Here is the problem:

I start it up again and when it gets to desktop it loads but the starts to redraw the desktop over and over and OVER again, and I am forced to restart it. Then I zap the PRAM, but no dice, it still does it. I boot from the cd and I reinstall just the system file, same thing. So the I start up the computer with no extentions. Finally it works!!! but then when I try and do something the system crashes and gives me a half a dozen errors :'(

any ideas :?:

 

[trag]

How long since you lasted boot the 8100?

I ask because the problem could be that the heat sink grease between the CPU and the heat sink has dried out and is no longer doing its job. I'd pull the logic board (yes, I know, a pain) and carefully! remove the heat sink and clean the white residue you'll find off with alcohol and swabs, both from the heat sink and the CPU. Then put a tiny dab of fresh heat sink grease (~$5 at Radio Shack if you don't already have some) on the top of the CPU and reassemble.

Do not use too much! If the stuff gets on the CPU pins it can cause shorts. It is only there to fill the imperfections between the CPU die and the heat sink surface caused by the two of them not being perfectly flat, so as you can imagine, it really doesn't take much.

Now, I may be completely wrong about your 8100, but I've seen this problem in a bunch of 7100s so far.

 

[ken27238]

I actually fixed the that problem by reinstalling the system software....but now some apps will freeze on startup

 

[JRL]

Freezing on startup still is most likely an indicator that shows that you need to regrease the CPU.

Be careful though.

 

[ken27238]

when i get some money I will change the CPU grease.....but I'll save that for later