Edge of Blue and White Window appears on upper right of desktop

[bluewhitewindow]

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz, Intel64 Family 6 Model 60 Stepping 3
Processor Count: 8
RAM: 8097 Mb
Graphics Card: Intel(R) HD Graphics 4600, -1984 Mb
Hard Drives: C: Total - 462956 MB, Free - 251747 MB;
Motherboard: Dell Inc., 0T3YTY
Antivirus: Symantec Endpoint Protection, Updated and Enabled

The blue and white window edge shown in the attached partial desktop screenshot appears on the upper right hand edge of the desktop some time after I turn on the computer. It appears when I am connected to the internet and when I am not connected (via an ethernet cable -- I'm not using wireless). Clicking on it or attempting to drag it has no effect. I do not notice any odd behavior while using my computer but I don't know what might be going on in the background.

I have performed a Symantec Endpoint Protection full scan and a Windows Defender full scan, and I have downloaded the latest Windows security updates. One file was removed by the Symantec scan, but otherwise no threats or problems were found.

Thanks very much for your help!

 

[JSntgRvr]

Move the Taskbar to the bottom, then attempt to drag that window from its top.

To move the taskbar to its default position along the bottom edge of the screen:

1. Click a blank portion of the taskbar.
2. Hold down the primary mouse button, and then drag the mouse pointer to the bottom.

 

[bluewhitewindow]

Great! I see the whole window, which is an ad for Windows Backup and Recovery, and I can just close it.

Thanks for your really fast and insightful response!