Aspire v5 471g computer laptop problems

When I start the pc and try to go to the bios by pressing f2 at the time...

After a month, when I press f2, it just beeps (like before), clears the screen and proceed to load the operating system...

2nd thing, hyper v is not in the bios, I can't even enable or disable but in msinfo32, I discovered that 4 hyper v's are all on yes...

also, there is no hyper v in windows features...

OS - windows 8.1 (basic)

I need help... kindly help me

In addition, I want to update the bios because of that... of course, downloaded from the acer site...

would it be correct? or it is not recommended? I've heard some have difficulties. and often lead to the black screen, not able to start properly and bios get corrupted...

Thanks for the replies

Tags: Acer

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