I have a HP Pavilion I bought last March. I just upgraded my card to a
GeForce 6800 128mb AGP. I opened the case and discovered that my power
supply is only 250W, and the GeForce needs 300W minimum. I contacted HP
and they tell that I cannot upgrade my power supply because I could
damage some components, and that it is "unsafe" to use the GF 6800 in
this system.
Does this sound right to you??

HP Pavilion a810 model, Athlon 64 3300+