09-19-2015 08:26 PM
04-29-2016 05:34 AM
Welcome to Lenovo Forums.
Sorry for delayed response.
As per the datasheet, N586 CPU can be upgraded Up to AMD Comal Quad-core A8-4500M Processor
For Lcd back cover issue, Please find the below part number:
LCD Cover AL (P580) 90201007
LCD Cover (N580) 90201029
LCD Cover IMR (N581) 90201034
Hence I would suggest you to visit the nearest authorised Lenovo authorised support for better assistance on both the issues.
Let us know if it helps.
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