Reset BIOS to default,errors

[FusionBolt]

I am using Windows 7 Ultimate.
I recently by mistake ran WIndowsActivator.exe and it ran some setups with OEM logo and made some changes in BIOS,now in Computer properties page,its not showing System Product name and Manufacturers name ? Did it messed with my BIOS ? how to reset those changes made to BIOS without opening my cabinet ?
Please help me,i am in lot of trouble,i cant break down my computer,its my workstation.

I am using Asus m5a78lm usb3 motherboard.

and if i format my computer,will it show product name and info on new installation ?

 

[KyleR]

Load your bios . there is a reset option in there. go into advanced bios features and find the factory reset option . hope it helps