Once you are sure that there is a fault in the hardware components of a laptop, you can check for two things at a glance:
1. Whether the capacitor is puffed
2. Resistor has been burnt
Just take a plain look at the circuit board and try to identify these faults. If present, just mention that this may be the problem and save your money. Many are trying to cheat for even small faults. You ll be charged for Rs. 1500. just for removing the dust, but the bill might say some components mixed with alphabets and numbers where each costs around 100s. In further posts you'll get information about general faults and solutions.
RESISTORS:
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