Motherboard repairing

i want to repaire my pc mother board.i have dell is on but cannot display and connot show number lock light in key board
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More about motherboard repairing
  1. We need More information about your problem .........
  2. Repairing a motherboard is not easy - the board itself is made up of several layers of copper interconnects, so a physical fault is terminal.

    However I think you are more than likely having problems with a BIOS.

    If you can find the model / make of the motherboard from the board itself - usually printed on the board.
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