OK ... for a few days (maybe a week) now I have had trouble with my Canon MX870 Printer/Fax. I have been using it successfully for the past 16 months now, via USB connection, installed on both my Windows 7 laptop and my Windows XP PC (I just unplug it and plug it in to whichever computer I need to print from).
For some reason, it has decided not to recognise the drivers
on my laptop. I have tried to uninstall and reinstall (no go). I also deleted every instance of MX870 from the registry that it would allow me to (some it wouldn't for some reason - no access - yes I am Administrator). Reinstall again ...still no go.
The Windows 7 Updates were failing to update the Fax component which I thought was the problem, then all of a sudden it was successful ... still no printer. Now, it is unsuccessful again.
But ... I don't use the Fax component ... never have ... with no problems for 16 months.
The reinstall from the CD is successful, but when I plug in the printer, it fails. "Device driver
software was not successfully installed. Please consult with your device manufacturer for assistance getting this device installed.
CanonMX870 series ... Ready to use (with a green tick) ...
CanonMX870 series FAX ... Failed (with a red cross).
Oh, BTW, the scanner component works fine.
Also, each time I unplug then plugin the USB cable, it attempts to reinstall the device drivers, the printer successful, the fax failing. It never did this before when I was happily printing away from both computers.
Oh, and by the way, I have no problem printing from the XP machine when it's plugged in there ... all is good there.
I have been to the Canon website and downloaded the latest drivers, which installed perfectly, but again when I plug in the printer, it fails to install the fax driver and the printer won't work..
I have also tried all of the various USB ports and ruled that out.
I've also run the Hardware and Devices Troubleshooter ... also without success.
Also, I don't know if this is relevant or not, but I can't even print to PDF. My CutePDF program is also not working. I thought this may have been a workaround until I got the printer working again, but no luck. CutePDF will go thought its processes (it's now ticked as default as my Canon is now longer even listed), up till the point where you need to name the file you're creating (that box doesn't appear) ... all you get to do is print, choose CutePDF, then it disappears ... no file .. or if there is, I have no idea where it's gone or what it's called ... can't find a trace of it.
I have not downloaded or installed any other programs (except Windows Updates) in some time that could have caused this. I am at a loss. This is a business computer and printer and is causing much angst.
I am running Windows7 (64bit) on an Acer Aspire Laptop (only 16 months old) ... Firefox 13.0.1
Also ... running Microsoft Fixit for Printers doesn't even detect the printer and tells me to install one ... it already is !!! As does the Troubleshooter ! Does not detect the printer.
Please help ... I'm about to chuck this out the window !
Thanks in advance