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TaskManager shows multiple copies of explorer.exe *32, each using up memory, sometimes 100%. How do I fix this?

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TaskManager shows multiple copies of explorer.exe *32, each using up memory, sometimes 100%. The higher the CPU usage, the hotter the exhaust and faster the fan runs. How do I fix this?

TaskManager shows multiple copies of explorer.exe *32, each using up memory, sometimes 100%. The higher the CPU usage, the hotter the exhaust and faster the fan runs. How do I fix this?

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