This is one of those situation where I'm not 100% sure what happened but I think it was this (note: the OS messages are translated so may be off a bit):
I think I pulled the printer's usb plug (from the computer) while the printer was receiving info from the computer about a print job
USB is by design Hot Swap-able, so the chances of you breaking anything that way are zero.
Printer: HP OfficeJet Pro 8500
OS: Windows 7 (64 bit)
Next time I tried to print, it didnt work (absolutely no response from printer)
- I tried different USB ports,
- tried restarting printer and pc (a couple of times)
I tried the OS trouble shooter and it said that there was something in the printer queue - nothing was showing there - but I suspect a print job got half sent to the printer and screwed things up, but it doesnt show in the printer queue.
That would be my first guess also. Here's what you do next:
Stop the (Print) spooler service - This may release the file by itself, but just to be sure...
Go to: C:\Windows\System32\spool\PRINTERS (Yes even on a x64 machine)
Any files left in that folder are your stuck print jobs. Delete everything in the "PRINTERS" folder. (I'm not yelling, MS capitalized the folder name).
Restart the Spooler service.
Under printers, there was an option in this printers context menu - something like "delete the printer queue". I chose this, and it said it was going to delete the printer - which was not the next logical step from just deleting the queued documents - but I thought WTF and did it - I thought when I connected the printer again the OS would simply install it again, but this didnt work. Absolutely no response from the OS when the printer was reconnected.
It's actually impossible to delete a printer if it has a job stuck in its queue.
I tried the HP software which sent me into a weird loop of attach printer -> install manually (I think, it was quite vague) -> back to beginning.
So that was no help.
Congratulations! You completed the "wizard" correctly ... And achieved the expected result.
This is not my computer/printer - I'm going to go back there (possibly on Sunday) with a different laptop and see if the printer gets installed on that one (in which case I would presume the problem with the OS - but I suspect it's with the printer.)
I'm thinking driver/OS ... But I'll come back to that in a minute.
But I thought I'd ask here if anyone had any tips - the printer is brand new so under guarantee (although I'd be embarrassed either way: to admit, or to not admit, what happenend)
Okay, write this down (seriously): Never, ever, ever, (ever...) tell one of HP's "Tech Support" drones, the "truth". They quite frankly aren't bright enough to process information on that level. Make up an at least half way plausible story that makes it as close to totally bricked as possible. Then there will be absolutely no reason to try to "Trouble Shoot" the device on the phone.
Side Track: The sales manager once bet me that we were not about to waste 2+ hours by calling HP's tech support. - He lost - We wasted 3.
Did try a google search but no success (but possibly using the wrong terms)
One of those days...
Make sure the USB cable is disconnected.
Go to Programs & Features, and uninstall the print driver from there. Also uninstall any other HP crapware that may be installed on the machine.
Reboot the machine.
Go to HP's website and download the latest driver for the machine.
Note: It's not that I actually think they might have fixed anything. We just want to have a known clean driver with a newer version than the one installed so Windows doesn't reflexively grab the old and possibly corrupt one again. (Think dog after a bone).
When the installer says plug-it-in do so, but not a moment before.
Hopefully it'll find it.