I have an inspiron 13 7000. after windows 10 upgrade it became painfully slow. i did a clean install of windows 10 form USB. Now if i don't use the laptop for a prolonged time (4+ hours) i get "no bootable device found pres f1 ...." message. If i press F1 it boots up just fine. There are no other issues. I've flashed the most resent bios. i suspect this has something to do with me deleting all the partitions when i reinstalled windows (if it does, then shame on dell). any idea on how to fix it?
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