Having several different issues with my Studio 1749. I'll explain separately incase they are not related.
1. First off battery life is almost depleted. Been getting a replace the battery message for about a month. Don't want to replace battery if the computer is on its last leg.
2. Recently the screen started blinking while in use. Sometimes mimimal and some times a lot.
3. On startup both my screen and keyboard blinks(a lot). Take longer to boot up and eventually goes into issue #2 mode.
4. With #2 above after a hour and a half or more the computer just powers off without any warning. No warning just shuts down.