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My inspiron 3511 laptops motherboard has been damaged 1 month after purchasing the laptop. I have hardly used it for 10 hours. After several checks the Dell Tech support team informed me that, the motherboard is faulty. Since it was under warranty, the motherboard got replaced. After the motherboard is replaced, the laptop became very very slow. I even got the OS reinstalled. The issue still persists. Using the laptop has become really annoying because of the slowness  Any idea on why it happens 
Inspiron 3511 Motherboard failure 1 month after purchasing