I bought my HP Color Laserjet CM1015 MFP about 5 years ago. It worked flawlessly on Windows Vista (unsure of 32/64-bit). This worked well on Windows 7 64-bit on two different machines (I upgraded to a new machine about six months ago). Just about two months ago it started to have problems with not being discoverable always. This was after HP Software Update program downloading an upgrade.
I have uninstalled the driver and try to reinstall from the original CD. Installation process itself fails. Using the Program Compatibility Troubleshooter moved it further along but did not finish.
Installing with the full software solution on this page completed successfully a few times. Unfortunately, there was no support for scanning. Worse yet, I lost the ability to print in color.
The amount of time I spent on this is ridiculous:-( I have an expensive, top notch hardware printer/scanner/copier. I hate to throw it away for lack of drivers. I welcome any workarounds (such as print servers or anything else that can revive color printing).