Hello. I have Windows 7 Home Premiem 64 bit. I have Lexmark X5650 printer. I had used the printer on my old XP MACHINE with no problems. When I got the Windows 7, I didn't realize or think about a certain process for connecting the Lexmark & I just plugged it into the tower & then RAN the install disc that came with it.

It worked OK, but I had to restart the PC every time I wanted to do a print job, or if there was more than 1 print job in the queue, I had to restart between every job to get it to print. Only other thing I had noticed was if you tried to cancel a job in the print queue, it would just say "deleting" & never do anything.

I decided that maybe a reinstall would resolve the issues. I deleted all Lexmark programs from uninstall programs & removed the Lexmark from devices & printers. I used the install disc again, not knowing I should start with the usb cable for the printer unconnected until the install process says to connect. I know better now.

My issue is that when I go thru the install process, when I get to the screen where it says to connect the usb cable now, I connect the cable, I hear the 2 sets of noises the PC makes when something is plugged into it, but the continue button on the install screen stays faded out & never goes to where I can click to continue with the installation to complete it.

I have gone to the Lexmark support site & have downloaded the correct DRIVER for Windows 7 64 bit. I have uninstalled all Lexmark programs. I have tried shutting down both the pc & printer & unplugging from electricity, I have basically tried everything that I have found doing searches for this issue that seemed relevant to my specific issue. Any info I have found doesn't help. I haven't come across anything in my searches that was exactly my issue.

I just can't think that either the printer or pc suddenly broke in some WAY. The printer worked previously, although with the few issues I mentioned above, but at least I could print. My feelings are that this can be resolved, I just don't know how to do it.It is not just Lexmark that does that kind of thing.
Here are link specific to your issue:

http://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/unable-to-install-drivers-for-lexmark-x5650/5e04d88b-3175-4972-9682-08bd702da537

http://www.ehow.com/how_6756364_uninstall-lexmark-printer-drivers.html

https://answers.yahoo.com/question/index?qid=20091114175028AAlCsGz

I do not wish  to bad mouth Lexmark. But you should buy something else next time.
Like maybe an Epson
http://www.tech-specs.com/compare/lexmark-x5650-n49171386,epson-workforce-m-200-n80033944
Hope this is of some help.