All electrical equipment releases electrical frequency interference (EFI) or radio frequency interference (RFI). According to the FCC, many interference problems in household electronics are caused by poor installation.
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Check all connectors and the video inputs on both the computer and the TV. Also check the computer power supply's shielding and your outside aerial antenna or satellite dish (if applicable). Look for loose or frayed connections. Also check any splitters in use.
Keep It Short
Using short wires and connecting cables reduces the chance of interference.
Move farther away from the TV antenna or satellite cables while using the laptop. The FCC recommends reorienting your antenna, satellite or computer cables to help relieve the problem.
Aerial TV Signals
Use cable instead of aerial signals for a reduced chance of interference. If you believe that your antenna is the problem, having a professional install an RF filter on your antenna may help.
If you believe the interference may be coming from your laptop power supply, take your computer for a checkup to rule out potentially dangerous electrical problems.
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