A problem with BIOS flashing it is recommended that you contact your computer manufacturer. Intel does not designed BIOS programs for Original Equipment Manufacturer computers.
I have a similar problem with a HP nw8440, with the Mobile Intel 945PM Express Chipset.
HP is no help. Their techs just tell me to replace components until it works.
While researching this problem I have seen numerous posts that describe procedures for recovering into a default BIOS, but have been unable to find the steps for this chipset.
If you find anything, please let me know. I will do likewise.
When this happened to me I still had warranty for my notebook.. so I've send it to HP and they had to change the whole motherboard...