You could try to firmware update your motherboard's chipset. (basically, update BIOS).
If it's an Intel chipset:
1) go here: [url:5518f]http://downloadfinder.intel.com/scripts-df/Product_Filter.asp?ProductID=861[/url:5518f] Put in your Operating System and run that file. It will tell you what chip is on the board.
2) Once you have the chip type (Probably i815 - i845, somewhere in there), go here: [url:5518f]http://downloadfinder.intel.com/scripts-df/Product_Filter.asp?ProductID=816[/url:5518f], insert your Operating System, then choose INF Update Utility .EXE file, not the .ZIP. Run that, then you will have to reboot.
3) Reinstall MOH:
http://mohaa.xgshosting.com/joe/installguide.htm
Hope that does something!