Windows 10: Recently I have a problem with my acer laptop, when I turn it on, it shows no bootable...

Recently I have a problem with my acer laptop, when I turn it on, it shows no bootable device. How to fix

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"No Bootable Device" Acer Laptop

Hello,

Recently I started having this problem where my Acer Laptop (Don't know the model yet) where sometimes I'll boot up, and it'll say "No Bootable Device" and an image of a magnifying glass over a hard drive. It's not consistent, as when I restart my Laptop
is loads up. I'm not too sure about the situation, but if anyone could help, please reply.

 

cannot turn on wifi on acer laptop

Laptop model: Acer Aspire A515-51-59DP

Here's what I've done so far:

1. Settings > WiFi Settings > Turn On WiFi (it shows as off). That switches the toggle, but never turns on. If I reload the WiFi settings, it shows as off again.
   
2. It does have a keyboard shortcut to enable/disable WiFi (Fn + F3), but that does nothing at all. (the other F-key hotkeys work). This machine does not have a hardware switch for WiFi.
   
3. Reinstalled WiFi driver.
   
4. Replaced WiFi card, installed drivers.
   
5. Disabled power management (don't allow Windows to turn off wireless)
   
6. Found a couple posts that said with Intel cards to disable 40hz. Now explicit setting for that here, but found one similar and changing it did nothing.
   
7. I don't see anything in the BIOS for enabling/disabling it.
   
8. Restarted machine multiple times. Also pulled battery and cord and held power for 30 seconds.
   

Any suggestions?

Video of the problem:

 

Acer Aspire bootable media

Ok ive tried bridging usb flash drive and hard reset...I have an acer aspire dual processor in the middle of doing a windows update it powered down, when turning on I got message no bootable media device found...I downloaded and ollow all steps to usb flash
drive and still I get same message plus missing drivers. I have another acer aspire a bit older but updated to windows 10 can I connect the two to fix my other acer...PLEASE HELP MY GUY NEEDS HIS LAPTOP BACK...I HATE SHARING LOL