When I print I only get a line of garmage at the top of the page - i've tried rebooting, etc.

would upload for the page so can tell you what is the faulty part

Conduit is malware. Get rid of it first, and reboot. Start by downloading the free version of Malwarebytes (Anti-Malware) from https://www.malwarebytes.com/ install it and run it - that takes an hour or more. It should locate and deal with malware like Conduit in your computer. Then reboot and try again.
There are more detailed methods if that did not remove it all.

In printer option select "Fit To Page"

Go into the Page Setup for the email program that you are trying to print from and this should allow you to change the print settings.
For example, in Mozilla Thunderbird, if I go into File then Page Setup, on the Format & Options tab I get an option to Shrink to fit page width, plus can change the page orientation (Portrait or Landscape).
On the Margins & Header / Footer tab I get further options I can use to control how big the page margins are and what header and footer information gets printed, i.e. page title, page numbers etc.
Once you've changed the Page Setup values, see what has changed for you on the Print Preview

pull out the black cartridge then get a tissue paper try pressing the nozzle again the tissue paper but not so hard then release look for the straight line that appear on the tissue paper if it is not change it

Try Using the HP Print Diagnostic Utility in Windows - HP Customer Care (United States - English).
,if you need more help, post or thumbs back.

http://tricks-collections.com/reset-printer-canon-mp140-mp160-mp180-mp210-mp220-mp460-mp470-mp500-mp510-mp530-mp600-mp610-mp800-mp820-mp810-mp830-mp960-mp970/
http://www.canon-europe.com/Support/Consumer_Products/products/Fax__Multifunctionals/InkJet/PIXMA_MP_series/MP240.aspx?faqtcmuri=tcm:13-639725&page=1&type=faq
Those links should help you.

This is a simple 3 step fix

a) Get rid of printer
b) Get rid of husband
c) Get new printer

Hope this works!! :-)

this is problem of software you are using to print(ie: word ,notepad etc) plz check the setting and try again.


check page setting ,properties,prefrences.
it is due to page layout also(ie: letter,a4,a5 etc)

Check the front paper exit rollers for fit and alignment also the paper deck guides close to the planten area, if the printer is dropping print vertically down one side of the page, this can be caused by debris or anything that lifts the caridge assy the slightest bit, also check the print head seating and ribbin cable for proper alignment