How do you ran the mem test

Nov 8, 2018
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My laptop is having a black screen problem, this is the second time i found a fix in this website a month ago about entering the memory test by pressing a key combination but i sadly forgot it. Can anyone share it pls? To the one who posted it pls if you see this post kindly share it thanks in advance, sorry for having a bad memory (me)
 
Nov 8, 2018
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Its just blank screen, i found a thread here in toms guide and one answer suggested a key combination to go directly to memory test without entering the bios or something, this is the second time i encountered this problem it was fixed the first time tho i even uninstalled some games and google chrome, it lasted for about 3 weeks then the problem occured again today
 
Nov 8, 2018
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Its just black screen before going to windows, i tried using external monitor, cant get to bios setup, advance boot or vaio recovery center

My decive is sony vaio vpcee2m1e