HP Multi-function printers may not work as expected after upgrading from Windows Vista to Windows 7

I'm having the same problem.  I've been trying to install the driver for my MP780 so it works with Win 7 and I reach the point where it's trying to find a port for the printer.  However, I have a wireless network, and the whole application ends without having installed the driver successfully.  So I'm unable to print from my laptop across the network.  I've submitted a query to Canon (3 times without any reply) and now have suggested to Microsoft to add a 64bit driver for the MP780 (there's already a 32bit compatible driver on the microsoft site).  So it's all at a bit of a standstill until the appropriate upgrade is loaded onto the microsoft site.

I tried all of these things and I still have issue with it.  Every patch or update just makes the computer worse.  I upgraded from Vista 64bit to Win7 64bit.  This is only one issue I am having with the Windows 7 upgrade.  Everybody needs to be on board here.....MS, HP, Adobe, and any other company that makes software/hardware for computers.  I hav spent more time trying to get things to work than I have being productive.  All new equipment and can't do anything with it!

Thanks,

Candy

Same for me. Very expensive computer. Buy upgrade and nothing works. This is no style. Nothing is compatible anymore. My 2 flatsreens dont work prperly - hp w2558, my printer dont work properly - hp j 4680. My Xbox dont work properly ... This is a blame for microsoft and hp. We pay for that stuff and nothing works. For the moment i'm busy, busy, busy, only with installing, uninstalling ...

No I don't have THE answer.    But, I have an hp6500 e709a with an added duplexer, got it from parts dept where it was on compatability list.  It worked fine on two vista pentium duo 32bit laptops and xp upgraded to vista desktop (boy was that a waist of money) for maybe 4 months then I bought an HP Pavilion with duo-quad Intel and of course Win 7 running 64bit.  Now vista machines see it but will only print to the que.  Period, no other functions.  Pavilion see's it and works on ALL functions I've tried except it won't duplex even thought it is 'installed' in the printer setup and preferences.  Sayes "duplexer not installed" asks permission to print one sided and then flips even pages as if it was duplexing.  Have both USB and Network, same problems. 

Now, somewhere in their forums HP has said "They are late getting their complete drivers out for 7, but WILL have them online BY the END of January. What's there are currently ONLY basic print and scan drivers."  And that is as close as I could get in a month and a half.  Oh, I have a 6 yr old HP Photosmart 2710 on Wireless with a new added duplexer and it has worked without a flaw on ALL my computers, but the ink is too expensive and the speed could be a lot faster, hence the 6500.   Hope this helps someone, or at least helps keep the fire burning under HP's butt.

UP DATE

Last night. 3 hrs after the above post, I got a notice for the up date.  Well guess what. I followed the instructions three times. Each time it said I installed correctly, and now I can't even get the the test page past the spooler.

NICE WORK HP!   NOT!