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Keyboard and mouse pad faults do not usually occur unless the keyboard has been abused with excessive force or fluid has been split between the keys. The usual symptom is one or more keys do not work or require excessive force. The only fix is to replace the keyboard. Occasionally motherboard faults develop that prevents the keyboard from working.
Common Laptop Hardware Faults
We Can Help With . . .
Laptop screens can fail in many ways; the screen may be cracked, smashed or leaking 'ink', it may show lines, random characters, white or black dots or show a very dark ghost image. Cracks may be caused by accident, or sometimes when the lid is opened quickly against stiff hinges. If the screen shows any signs of physical damage, including loosing 'ink', then it must be replaced; it cannot be economically repaired.
If the screen shows lines, dots or random characters then the fault may be either caused by a faulty screen, motherboard fault or defective cable where it passes through the laptop hinge.
Laptop Screen Replacement looks deceptively easy from pictures and You Tube Videos, but it is a skilled job requiring experience and care, as there is very little room inside the laptop and you need the right tools; this is definitely NOT a DIY job!
Power connector failure is one of the commonest laptop faults and may show one or more of these symptoms:-