|If you have a retail copy of Vista & your HP/Compaq case isn't proprietary, you can install just about any board you want. Judging from the following link, the board is "uATX: 9.6 in X 8.6 in", so you should stick with a uATX (aka mATX) board. |
Do you want/need onboard graphics or do you have a PCI-e video card? How much are you willing to spend for a board?
BTW, how do you know your board fried & not something else, like the PSU?