Have you tried 83MHz? I know it doesn't make sense, the faster bus should be
worse, but I could never run my Abit IT5H or Asus P55T2P4 at 75MHz. They both
have been running at 83MHz for over two years now without any problems. Both
systems are very well cooled though, you might want to check that as well by
running with the case open.

HTH,

Jose

Edna Sloan wrote:

> I have an LX chipset Soyo MB with bus speeds of 66,68,75 and 83.  CPU is
> celeron 300a which runs fine in a BH6 board @ 100 b us.  In the lx board it
> will only run properly at 68 bus.  At 75 it will boot up and run ok except
> for graphic programs, like PhotoDeluxe, etc, or internet pages, and will
> lock up.  I also have an ISA sb16, and PCI lightstpeed 128 video, udma 33
> Quantum HD,and scsi 2930 card for a scanner.  I am guessing that its the
> video card that's the problem.  I have tried different bios settings -
> slower memory, cache, pio, and video settings with no change.  I have
> checked the OC sites and forums but don't find anything about PCI devices
> that will run at 75 or 83 bus.  Any help appreciated.  Thanks, Edna Sloan

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