The 2 amber lights followed by 4 white lights on a DELL Latitude Laptop

1. Reseat the Original Memory: If applicable to your model, reseat the original memory module in the system. Sometimes, reseating the RAM can resolve the issue.

2. Check for Damaged RAM: If reseating the RAM doesn't work, consider checking for any visible damage to the RAM sticks. If they appear damaged, you may need to replace them.

3. Firmware Updates: Ensure that your system's firmware (BIOS) is up to date. Sometimes, updating the firmware can resolve hardware-related issues.

https://www.dell.com/community/en/conversations/latitude/latitude-7480-2-amber-lights-4-white-lights/647f7c0bf4ccf8a8dea5acf2

The 2 amber lights followed by 4 white lights on a DELL Latitude Laptop