When I first installed it, it would freeze the computer for 4-5 seconds every 5-10 seconds and often crash it irrecoverably, only a cold boot would do. Even on stand-by.
Eventually it corrupted my Windows installation. After re-installing Windows on a freshly formatted disk, and a few tries, I realised that the Photosmart did not recognise the USB 2 ports, installed as an add-on board on the mainboard (every other peripheral does). When I connected it to a USB 1 port on the mainboard matters improved considerably. When I stopped all its entries in MSconfig I finally got it to work in an acceptable manner. The photo output quality, both from scans and files, is outstanding; so is document scanning and OCR. However, it still blocks everything else, including the mouse, when it is scanning and does not allow me to play CDs or DVDs properly even on stand-by.
On the HP website there are "reduced drivers" for this unit, but I found them even more troublesome than the full version.
Short of upgrading my mainboard/CPU to a higher spec (at present AMD 1.2 GHz with 520 MB memory), is there anything else that I can do to make this unit more compatible with my system?