I have had the same experience with a BE-6 II, that processor, and similar other
hardware, and the only way I managed to solve it is to not run the system at
133MHz.  The siren itself is an indication of overheating, overvoltage, etc, and
trigger levels can be set in the bios.  This merely stops the alarm, doesn't do
anything for the lockups.  the system currently runs at 500 MHz, because my
mother didn't care enough to let me do exhaustive troubleshooting.  I didn't find
the board to be stable at 133MHz FSB.

Glen Sagers

Jay Merritt wrote:

> Hi All,
> I apologize for the lengthy question which follows, but want to give as much
> info to the group as possible in hopes of an appropriate answer. I have the
> following system, which has been running very solid for a little over a year.
> It is as follows:
>
> Abit BE6 II Mobo
> PIII 600/133 FSB CPU Retail boxed (NEVER OVERCLOCKED)
> 2 sticks of Crucial 128MB PC133 ECC ram
> 3DFX Voodoo 3 3500 AGP Video Card
> Win98SE
> Pioneer DVD ROM
> HP CD/RW
> 2 -WD UDMA-66 20.5 Gig 7,200 drives
> Full tower case w/2 cooling fans & 1 HDD fan
> PC Power & Cooling 275 Watt Power Supply
> The System crashed Christmas day after rendering a home video w/Pinnacle DV.
> So far I have been unable to get it going again. I have replaced the video
> card with a new replacement from 3DFX and tried an old PCI 4 Meg card,
> removed and swapped positions of the Ram, cleared CMOS and reset BIOS,
> removed all cards, & removed all drives. I believe at this point the MOBO
> must be bad as I am running out of ideas.  I understand the BE6 II is an
> Intel 440BX chipset, which is "Out of Specs" w/the 133 FSB speed I have been
> running the system at. Is there a definitive way to check the MOBO. (I don't
> have another Slot one processor to try in it.) I have ordered a new Abit SH6
> board, which is an Intel 815 Chipset, & supposed to work with 133FSB and Slot
> 1.
> The symptoms are as follows:
> If the system has been off for a few hours it will likely boot and within 2
> minutes of being on the screen will simply freeze and the keyboard will not
> respond. The only way to shut it off is w/power switch. An immediate reboot
> will result in a blacked out monitor, with no POSTING info on screen, or any
> video BIOS. After a few seconds like this, a pulsing siren sound comes from
> the system speaker.  All attempts at troubleshooting as outlined above, have
> resulted in the same scenario.  Any help would be greatly appreciated at this
> point.
> TIA,
> Jay Merritt

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