@charles, suggest Dell replace the card reader and the mother board for a more permanent fix. Unplugging and draining power is a temporary fix - its a super option for anyone whose warranty has expired. If you have a warranty remaining, insist on parts replacement - not just the card reader, but mother board too. Both have to be replaced at same time or the problem will reoccur. I can't tell you how many times they replaced the card reader alone. They have to replace both parts at same time. Tomorrow I will research to find out exactly what they did to resolve the problem once and for all. Will update my post then.
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