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My Lenovo IdeaPad A1 Tablet is losing the WIFI connection around every 30 seconds. I'm using this router. The SSID is hidden and MAC address filtering is enabled.

Any ideas what the problem could be?

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What have you tried already? Where are you getting stuck? As it stands, this question is currently too vague to be answered beyond guessing. – Ƭᴇcʜιᴇ007 Aug 18 '12 at 20:16

Have you done a through site survey with a tool like Heatmap or similar. A conflict with a nearby device can cause this issue. Assure you are on an unused channel.

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