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If I replace a 250 Watt Power supply with a 300 Watt one, will I blow up my motherboard?

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I have a desktop Compaq Presario with 4GB RAM (purchased in 4/2010) that is running Windows 7. If I replace the 250 Watt Power supply with a 300 Watt one, will I blow up my motherboard? I have a laptop running Windows 8.1 and it does not have the programs I need (Movie Maker, DVD Maker, etc), so I need to keep this one as long as I can.
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  1. Best answer
    No. Your power supply almost never draws it maximum wattage anyway. All a 300 watt power supply will do is, if necessary, be able to draw more wattage than a 250 watt power supply.

    The power supply only draws what the computer needs, nothing bad can come from a higher wattage power supply.
  2. Lol, no it will only power what you have, you will just have extra wattage. It will not blow up your motherboard 100% guaranteed. :D
  3. The wattage of the power supply is an indicator of how much power it CAN output. Your computer will only draw as much power as it needs. If your computer draws 210 Watts, it will draw 210 Watts no matter how big of a power supply you hook up to it.
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