3 beeping sound and black screen and it won't turn up
My MacBook pro 2010 keeps beeping with a black screen and can't even turn up
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Three beeps when your Mac starts up indicates a problem with firmware or RAM & the unit will not post into the OS. Try resetting the RAM but if that fails then it is not good news sorry. Hopefully you just need to replace the RAM.... Try booting with just 1 stick inserted, or swap them around 1st, This may help to discover which module has developed a fault. Remember that it is best to have an identical matching pair of RAMS otherwise there maybe issues.
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