Aspire One - Missing operating system - windows 10

nancy0608 · June 2017

Hello,

I've a probelm, I get a message "missing operating system" on my aspire one notebook that has windows 10 as OS, or it just opens normally then after a while load the message: "insert boot device..etc"

PS . I got this Windows version from Microsoft itself when it promoted this free version for a while some time ago

Can anyone here help me with that?

Thanks,

Nancy

IronFly · June 2017

enter BIOS at boot pressing F2

check if your HDD is listed on main tab or under bootable devices

nancy0608 · June 2017

Thanks for your reply.
This is what i found in 2 different times, following eachother, entering BIOS:

Info page:
Hdd model number: listed
Hdd serial number: listed

Boot page:
Legacy Bios: disabled
Hdd: listed

The other time:
Hdd model name: none
Hdd serial number: none
Legacy bios: disabled

It does happen that sometimes it starts normally (and then ask me to insert boot device, and other times it doesnt start)

Shall i try to switch from legacy to uefi?
What will be the difference?

Thanks
Nancy

IronFly · June 2017

Legacy is disabled right now, try to switch to Enabled.

the main difference is partition scheme on HDD/SSD, there are also some other things but it's worth a try to switch.

by the way, that missing HDD is not a good sign, i strongly suggest you to backup all your personal data if you are to boot, then take your laptop to a computer shop and have your HDD checked.

nancy0608 · June 2017

I dont find an option to make it "enabled", just legacy or eufi options.
Shall i switch to eufi & try?

I already made a backup but i'm still having hope that i can fix it myself, specially that sometimes it starts normally.

Thanks

nancy0608 · June 2017

I also have "Secure Boot: Disbaled" and cannot choose it to change it.

IronFly · June 2017

yes switch to UEFI, don't mess with secure boot.

nancy0608 · June 2017

after switching to eufi:

No bootable device hit any key

ok
boot option menu: no menu shown
Enter to select option (no options shown, so i just hit enter)
& then i hit ESC & it asks me to restart pc
of course to have the same messages again
i guess it's not a solution in my case
i'll switch back to legacy, ok?

IronFly · June 2017

yes, switch to legacy.

as i told you, can be your HDD/SSD just going south or the motherboard controller.

if you are able to boot at least once, backup everything you need ASAP!

nancy0608 · June 2017

ok, switched back to legacy.

Is there any solution i can do now to solve this problem? diagnosis or anything?

Thanks

IronFly · June 2017

i think the best will be unplugging the HDD from your laptop and connect it to another PC using an external USB HDD bay and copying all you need, then do a scandisk - sectors check.

scandisk is a sort of "stress test" for your HDD, so you can image if it fails during scandisk without having your files backupped.