08-13-04, 08:51 AM
I just bought an hp pavilion a450n (P4 3.0 ghz). It came with an FX5200. I bought an XFX 6800GT to replace it. On startup, however, I get an alarm (a sustained high-pitch tone) from the hp, and no boot up. hp tech support says the alarm is video related; inability to find a video card (although with no card at all, there is no alarm), but has no more advice. XFX hasn't been able to help. I thought it might be the power supply (only 250w in the hp) but I've replaced it with 300w. Would love the great advice of the forum. Thanks!