Broken Screen

-Reduced colour rendering and contrast.

- Broken or cracked surface

-Electronic noise.

-Defective pixels.

-The screen does not turn on.

Hard Disk 

- Many delays

- Errors during saving

- The hard disk is full

- Cannot boot the operating system

-You hear noise when data is accessed or saved.

Keyboard

-  Defective keyboard

- Wear and tear

- Accident with liquids

- Dust and other materials which impede the 

proper function of the keyboard

Logic Board

-The MacBook / Laptop cannot get powered.

-Cannot boot to your OS.

-Accumulation of dust and overheating of the system.

-Random power offs or reboots.

-Unstable voltage of power supply.

Operating System 

- Your device can not boot on OS.

- Update your OS.

- Remove virus from your device.

- The OS on your device make your device slow.

-Restore/Format your device.

Power

-The laptop does not work.

-The charge indicator turns on and off by itself.

- You are forced to search for the proper angle to charge your laptop.

- Laptop charges intermittently.

Microphone / Sound

-Your MacBook / Laptop cannot replicate sound.

- The volume will be low.

-The sound will have poor quality.

-The sound will operate with intermissions

-You cannot record sound

USB Ports 

- Many delays

- Errors during saving

- The hard disk is full

- Cannot boot the operating system

-You hear noise when data is accessed or saved.

Video Card

-  Poor colour rendering

-Geometrical shapes appear on the screen

- Low resolution, inability to change the resolution

- Applications do not open

-The screen does not display anything