I have reset my computer to factory settings. Now when I log into the quickbooks online canada, I do not see my left navigation bar. How can I bring it back. Thanks

I would be happy to help you get the navigation bar back , zmaswood!
 

QuickBooks Online provides the option to hide the side navigation bar, so you can expand your view.  To bring it back, simply click on the trigram symbol ☰ at the top left of the screen.  This will restore it for you.  

If pressing the ☰ doesn't restore the left navigation menu, it could be that the stored data on your browser is causing unexpected behavior. To fix this, I recommend clearing cache on your browser.

If you have any other questions, feel free to reach back out.  We would be glad to assist!