Left hand section of the screen discoloration in lockscreen

Question

My 8gb memory 13 inch display Macbook pro retina is relatively new (couple weeks old). Recently I noticed when I put it to sleep mode, and turn it back on to the lock screen, I see a section on the left hand corner of the screen which has vertical streaks (a lighter gray pigment color than the rest of the screen). I've done some testing on it, and the unusual thing is, it literally is only visible when on the lock screen, in which my background is visible. So I don't believe it is a hardware issue pertaining to the screen; possibly software issue?. But it does give me some concern, especially because my laptop is only a few weeks old, and the most I've done on it was some document work, emails, videos, etc. Any input would be greatly appreciated.

Answer 1

Hello,
Certain Thunderbird problems can be solved by peforming a ''Clean Reinstall''. This means you remove Thunderbird's Program Files then reinstall Thunderbird. Please follow these steps:
#Download the latest version of Thunderbird from http://www.mozilla.org/en-US/thunderbird/ and save the setup file to your computer.
#After the download is complete, close all Thunderbird windows (Click Exit/Quit from the menu button on the right).
#*'''Windows:'''
#** C:\Program Files\Mozilla Thunderbird\
#** C:\Program Files (x86)\Mozilla Thunderbird\
#*'''Mac:''' Delete Thunderbird from the Applications folder.
#*'''Linux:''' If you installed Thunderbird with the distro-based package manager, you should use the same way to uninstall it - see [[Installing Thunderbird on Linux]]. If you downloaded and installed the binary package from the [http://www.mozilla.org/en-US/thunderbird/ Thunderbird Download Page], simply remove the folder ''thunderbird'' in your home directory.
#Now, go ahead and reinstall Thunderbird:
##Double-click the downloaded installation file and go through the steps of the installation wizard.
##Once the wizard is finished, choose to open Thunderbird after clicking the Finish button.
<b>WARNING:</b> Do not run Thunderbird's uninstaller or use a third party remover as part of this process, because that could permanently delete your Thunderbird data, including but not limited to, extensions,emails, personal settings and saved passwords. <u>These cannot be recovered unless they have been backed up to an external device!</u>
Please report back to see if this helped you!
Thank you.