We have run into issues like this a couple of times and have found solutions to both issues, but I would like to first ask some clarifying questions.
1. Is this system a laptop or a desktop?
* If it is a laptop, try turning up the brightness. This proved to be the problem on a couple of occasion.
* If it is a desktop, does it have an on-board graphics card?
- What are the video output options, and does it have an LVDS connector?
2. Are you experiencing this issue with Service Center Bootable Diagnostics or Service Center DOS?
* If you are testing with Bootable Diagnostics, have you tried using the "Video Fallback" option?
3. Are you able to provide a screenshot or video of the issue for clarification?
Any additional information you are able to provide will assist me in determining the cause of the issue.
Thanks,
Kris