Please do try these troubleshooting steps that may help in solving the issue.
- Start by doing a hard reboot, remove the battery and unplug its AC adapter then press and hold the power button for 20 seconds then try booting it up again.
- If this will not work reseat the RAM's, remove them all for couple of seconds then put them back in making sure everything is seated properly.
- If these steps will not work do also try this link that should show you what to do with that issue that may help.
Black screen shows when I turn on intel lenovo and a message saying, to interrupt normal startup, press the blue thinkvantage button
Any background to this? Did this start out of no-where one day or was anything added/changed/removed/dropped etc..? Any odd noises from the hard drive or messages you were getting before the issue? At times people get warnings about something about to fail and ignore it till the system fully dies.