By the way, your laptop is probably going to die like my did. I had to reflash (oven) my motherboard more than few occasions but finally it gave away. HP made defective design in which the heatsink wasn't able to dissipate heat efficiently.
The documentation for one of my sister's (Toshiba) laptops actually said: "Do not run for more than 30 hours at a time."
Why not use a RasPi? Can run 24/7 on less power and uses UTP/Linux...