Answer
This question was answered on January 30, 2001.
Much of the information contained herein may have changed since posting.
In order to find the conflict, you need to click Start, Settings, Click Control Panel. Double-click System, click Device Manager Tab. Click View devices by type. Find your scanner(there is probably an exclamation point)- double-click scanner, Property box will pop up, Click the General tab, look for Device status, this will tell you whether there is a conflict. Click on the Resource tab. Towards the bottom there is a box called Conflicting device list. This is where you should find your conflict.
To resolve this, you may want to refer to HP's troubleshooting guide.
>http://hpcc923.external.hp.com/cgi-bin/cposupport/get_doc.pl?SNI=c5192a&LC=scanners&Tfile=bps02714
Good Luck