To fix this problem, you may first check the LCD screen module for possible damaged or try installing it with a new one. You may also try to restore or flash update the device firmware. There are some cases that a display problem caused by a firmware interruption and can only be fix by restoring the firmware again.
For hardware problem issues such as heavily dropped or water damaged devices there is a tendency that you may need to troubleshoot the device by way of hardware troubleshooting procedures, this includes cleaning the PCB board and replacing the LCD if broken or damaged.
If all that above procedure has been made but the problem still exists, you may refer this one solution below for further troubleshooting.
Nokia C1-00 LCD Pin Connector Jumper Ways