Best thing is to open her open & find the model number on it, then try to find/take a pic of it.
Sometimes hp/acer etc just rename the mobos from the bios.
Even if its a hp own motherboard you could still download another manufactures bios if you find something with the same chipsets.
Ok, so through searching MS-7297 on google, second link down (it's a forum so don't want to link to it) The 4th post down states that
THIS is the MS-7297, even though mine has 2 DIMM slots and this has 4
Now, this motherboard he's linked to, it is the exact same chipset as mine, the board layout is similar and I can see certain components are exactly the same, however, my PCB is green and 'thinner', here's a pic:
I still don't know whether to take the risk or not since it does look different.
Update, upon searching the model number more, I came across
THIS which looks VERY similar to my board but there are still bits that are different... capacitors in different positions, I have a battery where the southbridge is. Thats the 7237 though, no the 7297 which I'mm having trouble finding. According to MSI Live update (which I just tried running) no 7297 exists!?
Well, it is definately MSI that make the board anyway
I'm SO desperate to overclock! Managed to get my 8800GT from 600 core to 788 and memory from 900 to1053. Interestingly enough, my FPS don't got below 60 now. I'm determined to find this BIOS to squeeze as mcuh out of this processor...oh and also to get rid of the horrific HP boot screen =P