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A computer’s power supply generally lasts for the useful life of the unit, but if you update components (especially the video card), you may need to upgrade to a power supply with a higher wattage rating. This how-to article explains the replacement/upgrade process for tower or mini-tower systems, but does not apply to laptops. Generally, replacing a power supply does not subject any static-sensitive components to any shock potential, but using an anti-static wrist band is advised. more »
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