Why is the XPS 9550 POST speed so slow. The amount of time it takes from when you press the power button to when it starts Windows is about 5-7 seconds. This slows the startup time of the laptop significantly! With an SSD a cheaper Acer computer beats this computer to POST by about 3-5 seconds. It takes the Acer about 2 seconds to start booting Windows. I am on the latest BIOS/UEFI as of 24/04/2016 which is 01.02.00. I suspect this could be something to do with fast booting! Please fix this as it would be amazing to have a faster booting computer!
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Unfortunately this is not Dell's fault. I posted a question on notebookreview.com and got the answer. It is a DDR4 Problem not DDR3