I'm sorry about the issue. When did this issue first occur?
Are you able to open any program?
If you shut down the laptop, then turn it back on, then right away, when the first screen appears, does it show yellow or show normal?
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Is the battery removable on this laptop? If yes, can you shut down laptop and remove battery for a few minutes, then reinstall and then turn on, and check?
When you move the laptop's lid back & forth, does yellow go in & out?
You're welcome. OK, please try, then let me know. When you are available, please reply at the box below to continue troubleshooting. Thank you.