After updating Windows last night, VirtualBox could suddenly not find more than 2 core in my machine. Same with task manager. Since both had detected 4 cores before, Windows update must've done [I]something [/I]that broke it.
I have a Lenovo U310 running Windows 8.1, with an i5-3317U.
Restoring BIOS and/or Windows installation to factory settings did not do anything.
I don't believe HT is activated bt factory settings. You need to go in your bios settings and turn it on yourself.
[QUOTE=FrankPetrov;43190665]I don't believe HT is activated bt factory settings. You need to go in your bios settings and turn it on yourself.[/QUOTE]
I have no hyperthreading option in the bios and already reset the bios to factory settings.
[editline]15th December 2013[/editline]
Also it was turned on before.
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