littlezipp,
Since anything is not impossible, I can't say it's impossible to OC your Compac Laptop. Compac or any other manufacturers don't want you to OC so they lock their BIOS setting so you can't change except the main options like the booting sequence, enabling L1/L2, clock/suspend setting, etc.. Unless you come up with some kind of BIOS programming and to overwrite everything in there, you could OC your Laptop but other than that, there's no way. I have never seen anyone able to successfuly OC their Laptops yet.