My Lenovo turns on but as soon as I touch the screen or move the mouse it turns black again?

Sounds like the cable that connects the display may be loose.

If it is under warranty still, contact the manufacturer. If it isn't, then you can either open it up yourself and disconnect, then reconnect, the displays cable. Or, if you don't feel comfortable doing the work yourself, take it to a local tech.

Nov 5, 2017