Never do a re-install unless you run the un-install software or remove the program from within add/remove programs in control panel. You're software is all messed up now. Lets try this.
Turn off you're printer (press the on/off button). Click the start button & slide up to & click on control panel. Once opened. Double left click add/remove icon & it will open. Find Lexmark & un-install the software by clicking on remove. Un-install/remove anything having t do with the Lexmark printer. When finished close all opened windows. Restart you're system. When windows has finished loading I need you to creat a folder on you're desktop. Name it (Lexmark Z705). Click on the link below.
Save this link above to you're favorites. (You may need to come here again).
Scroll down the page till you see, Lexmark Z705 - Drivers and Downloads. Click on you're operating system.
Click download now. Choose to save the file. Save the file into the folder you created (Lexmark Z705). Once down loaded open the (Lexmark Z705) folder. Double left click the .exe file.
Follow the instruction & on screen prompts. The software will tell you when to power on you're printer.
If this fails to install correctly please post back in this windows & list any error messages you might receive. List you're operating system too.