Why is my screen not working all the way

Try a hard reboot or reset . This is done by removing the battery and disconnecting the power cord so there is no power to the laptop from any source. now hold down the power button for a full 60 seconds. This should discharge the cmos battery and clear the memory. Now put the battery back in plug in your computer and fire it up . Hope this helps .

"I had a similar problem earlier this week.

I opened up the system, check some of the connections related to the monitor (unplugged and plugged back in). Closed it up, turned it on, and it runs great.

Sometimes a connection is just a bet loose.

I would try Jimfixer's suggestion first, as it is less labor intensive."