It sounds like either the power supply unit and/or the motherboard are
failing. The easiest way to find out which is to replace the PSU with a
known working one and see if that fixes the problem.

--
--DaveW


<no-email@all.com> wrote in message
news:f8tco3hkkdvurfb88a718aj4sd8dfmrg4b@4ax.com...
>I have a 1GHZ IBM Netvista computer. I am running Win98se.
> At least once a week, if not several times a week this computer will
> just reboot without any warning. I am not referring to the occasional
> blue screens that happen with Win98, those happen once and awhile, and
> I'm not too worried about them, knowing they are just part of Win98,
> and they happen less often than these reboots.
>
> It seems the reboots usually occur the most often when the computer is
> not being used, and is in idle. I DO NOT have any power saving or
> screen savers turned on, so it's nothing like that.
>
> Generally, what happens is this. I leave the computer, often have a
> couple web pages and Agent loaded. I normally manually go offline
> when I am not using the computer to avoid tying up my phone line
> (dialup). So, the computer is doing nothing except sitting there with
> a few things on the screen. I come home a few hours later and find
> the computer with the C: dos prompt on the screen. (I have shutdown
> set to boot to dos). I have to reboot and everything is fine again
> until the next occurance of this problem.
>
> Yesterday I was on the computer typing a newsgroup message, and had
> several web pages loaded in the background. All of a sudden the
> computer just shut off. The screen went black, I heard one long and 4
> short beeps, and there was nothing on the screen, and the computer was
> shut down, except the power light was still on, but no fans or drives
> spinning. I had to shut off the power to get anything to happen,
> since CTRL ALT DEL did nothing. When I turned it back on, everything
> loaded normally, and I went back online. I bagan to load some web
> pages and found the entire system was running so slow I could barely
> get the cursor to move. To move it a half inch meant moving the mouse
> 10 inches on the desk.
>
> I rebooted again, this time leaving the computer off for several
> minutes before restarting it. I rebooted again, and everything has
> worked fine ever since.
>
> What the f##K is going on?
>
> I will mention that I have run Scandisk as well as Diagnostics from
> the manufacturer on both of my hard drives, and they are fine. I
> checked both the P.S. fan and CPU fan, and both are running. I also
> have tried to remove one of my two RAM strips, and this problem
> happens with either (or both) strips. I also pushed all connectors to
> be sure they were tight inside the case.
>
> The chipset and CPU are Intel.
>
> Anyone have any idea what's going on?
>