Hi Michele,
Thank you for choosing Microsoft Community.
From the information you have posted, It looks like you are facing display issues during startup in Windows 7.
I will certainly help you with this issue.
Were there any changes made to the computer prior to the issue?
Please follow the methods.
Method 1:
Please disconnect all the hardware devices connected to the computer except keyboard, mouse and monitor and check.
Method 2:
Let’s test the issue in safe mode.
Refer to the link.
Start your computer in safe mode
http://windows.microsoft.com/en-IN/windows7/Start-your-computer-in-safe-mode
If it works fine in safe mode, perform clean boot.
Refer to the link.
How to perform a clean boot to troubleshoot a problem in Windows Vista, Windows 7, or Windows 8
http://support.microsoft.com/kb/929135
NOTE: After troubleshooting, revert the computer
to start as usual (Refer to “Step 3” from the link mentioned above)
Method 3:
Update the display drivers and check.
Refer to the link.
Update a driver for hardware that isn't working properly
http://windows.microsoft.com/en-IN/windows7/Update-a-driver-for-hardware-that-isnt-working-properly
For assistance with issues related to Windows feel free to post on Microsoft Community Forum.