Game Boy Power Problem Troubleshooting
Important Note: The Game Boy Advance has a special power light that indicates battery strength. When the remaining battery life falls below 30%, the light turns from green to red. Other systems may briefly display a power light or emit a "chirping" noise before shutting down, which is normal.
Troubleshooting Steps:

Example: Proper Game Boy Advance Battery Placement
Click here for additional troubleshooting if you are using a rechargable battery pack for the original Game Boy
If you have tried these steps and your system is still experiencing problems, your system will need to be repaired or replaced. Your options will depend upon the system you have: