[LBo] Help troubleshooting computer lockup problem

[Jisao]

Sam Morgan wrote:
> The computer is a 1.3 ghz AMD with 3 sticks of 133mhz. 512 mb ram I 
> have MS Vista installed on it, which runs fine with no lockups.
>
> I ha been trying to install Kubuntu on it and running it is where the 
> problem showed. It runs fine from the live cd, no lockups. But 
> installed (from the install cd not the live cd) it will freeze after 
> maybe 5-10 min of operation.
> No particular program is running when the freeze happens.
>
> When I say locking up, I mean the mouse freezes, the keyboard becomes 
> unresponsive, nothing works, but the on off switch on the computer.
>
> In the #LBo chat Sunday someone mentioned it might be a bad stick of 
> ram, so I ran memtest on all 3 sticks of ram (individually). One stick 
> would show about one error for every hour of the testing run. So I 
> replaced it with a stick of 133mhz 128mb (oh how the mighty have 
> fallen, hehehe)
> That didn't fix the problem.
>
> I reinstalled and this time I used Xubuntu. All seemed fine, til maybe 
> 30 min into the run when it did the same thing. I'd say it was an 
> overheating/video card problem, but then why does it not happen when 
> running Vista. I do plan to swap out the video card some time in the 
> next few days, but I'm not sure that will fix it.
>
> So any suggestions from the group as to my next steps troubleshooting 
> this weird problem? No I haven't ask on any of the #*buntu channels 
> nor have I browsed their wiki, (yet).
>
> TIA
What is you motherboard brand and model?

Jisao