Re: LaserJet 3030 Cannot Scan in Windows 8

Try the HP Print and Scan Doctor:

http://h30499.www3.hp.com/t5/Multifunction-and-All-in-One/Trouble-printing-or-Scanning-Try-the-HP-Print-and-Scan-Doctor/td-p/5809027

It sounds like your scan drivers became corrupted and need to be reinstalled.  A reinstall with the latest full software solution from http://support.hp.com should be a good place to start too.