|The negative contact in the battery socket may not be making contact. bend it to correct. |
You could also check with Gateway to see if there is a BIOS update to address this problem.
Unless the computer has been subjected to a power surge I can't understand why this should be occurring.
Below is a link to Gateway downloads. It appears there may be some BIOS updates. The latest one gives no reason for the update. Be aware that flashing the BIOS MAY result in a non operational computer.