Acer Aspire E5-576g is unbootable with SSD while on UEFI boot mode

RaviF
RaviF Member Posts: 2 New User
edited September 2023 in 2019 Archives
My laptop is Acer Aspire E5-576g which has a Transcend 240GB M.2 SSD 820S installed when buying the laptop and Windows 10 Pro 1803 version is installed to the SSD. I used it for nearly 8 months without any problem. Today when I boot up my laptop, an error message appeared as "No Bootable Device Found". Then I Googled the error and found a solution, changed Boot Mode from "UEFI" to "Legacy" and restarted. Then the laptop restarted properly. I have few questions on this.

1. Why this would happen on UEFI mode ?(Is that because it boot from the SSD?)
2. What is the difference of using Legacy mode rather than UEFI? (Are there any consequences?)
3. I saw many Acer users have reported this problem. Is that a common issue of Acer laptops?
4. Is there any permanent solution for this issue?

Thanks  :)

Best Answer

  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,305 Trailblazer
    Answer ✓
    1) This happens when the bootable boot partition of windows is corrupted, or when the ssd or hd is badly connected on the motherboard!
    2) Legacy mode simulates the old bios, which requires an mbr partition. Currently, it is not called bios anymore, but UEFI. Legacy mode supports the installation of windows x86 or x64.
    Uefi has some extra layers of security, and it also allows the user to install hds with more than 2tbs, converted to a gpt partition. In notebooks, it only allows the installation of windows x64. On tablets, uefi mode supports the installation of windows x86!
    3) This is not a problem unique to Acer. Look into the dell, lenovo and asus communities that you will encounter similar problems!
    4) It is possible that a uefi update can solve the problem!
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
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Answers

  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,305 Trailblazer
    Answer ✓
    1) This happens when the bootable boot partition of windows is corrupted, or when the ssd or hd is badly connected on the motherboard!
    2) Legacy mode simulates the old bios, which requires an mbr partition. Currently, it is not called bios anymore, but UEFI. Legacy mode supports the installation of windows x86 or x64.
    Uefi has some extra layers of security, and it also allows the user to install hds with more than 2tbs, converted to a gpt partition. In notebooks, it only allows the installation of windows x64. On tablets, uefi mode supports the installation of windows x86!
    3) This is not a problem unique to Acer. Look into the dell, lenovo and asus communities that you will encounter similar problems!
    4) It is possible that a uefi update can solve the problem!
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • RaviF
    RaviF Member Posts: 2 New User
    Thanks for the help.  :) But I afraid updating UEFI would cease my 2 years warranty 
  • Ok my friend! 
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :)