I need the BIOS for My Gateway T-63 series Lap Top.

I have a Gateway T-63 series Lap Top. The Mother Board part # is: ACEH-40GAB1700-F605.
The serial # is: V94DM03707.

I tried contacting Gateway but the information (Serial #) that the system is asking for in order to attend to my request is scratched off the bottom of my Lap Top.  So, I am unable to Download a copy of the BIOS that i need.

I am having problems with;
1)  the fan constantly racing
2)  the computer running slow
3)  the CPU is constantly running between 55% and 75%

The computer was working quite well until my daughter started to use it.

I have;
1) cleaned the whole cooling assembly and applied fresh
    Heat sink Compound
2) along with doing other checks that various sources on
    the web recommend.
3) I have also replaced the Hard Drive; The laptop was
    ok for about two days afterwards  and then the problem returned.

It was suggested that I should re-flash the BIOS but as I mentioned before, I am unable to download a copy from the Gateway Web site.

I am soliciting the help of this community to help solve this problem.

Thank you very much.

[edited to partial serial number for privacy-please do not post personal or unique information such as but not limited to full names, email addresses, phone numbers, full serial numbers, etc.]