That light sequence indicates an LCD failure. The grey background was a precursor to the screen failure. You can find that screen usually at Parts-People as it will need replacement, however they are out of stock at the moment. However it may be that your system is under warranty. Call Dell tech support for repairs if so. If you are out of warranty Laptopscreen here has that screen in stock.
Hello, my laptop screen started to show a grey background then shut down. Now it refuses to turn on at all. It then shows 2 blinking amber light then 7 white lights.I would really appreciate it if someone helps me solve the issue.
latitude 3420 Blinking white and amber light.