Hi @nox8315 your initial opening comments were good about converting M.2 drive to GPT partition format which is more reliable and enables BIOS/UEFI fast boot. However there was no mention of creating a clone OS(C:) boot drive as your disaster recovery, should your original OS(C:) boot drive become unrecoverable.
You should consider your disaster recovery options, get different M.2 drive card preinstalled with generic Windows 10 x64 (from eBay, etc.) that can then be updated with system specific drivers, or keep messing around in the hope that your expertise can fix this problem.
As a general rule, never install Dell updates unless there is a new feature you want. BIOS updates should be avoided if your system is healthy. If determined to update BIOS, follow the instructions provided on the BIOS update webpage.
Hello, we see you are looking for assistance. Click our DELL-Cares username, on the right click, "Send this user a private message". Provide to us the private Dell PC Service Tag.
Did you disable the Load Legacy Option ROM in the BIOS when you switched to to UEFI? It may not help in this case but it's good to do anyway.
Did you use the Command Prompt to change from MBR to GTP and back again?
I would set the BIOS back to default, format the drive and do a clean Windows reinstallation. It sounds like the system and the drive aren't talking to each other properly so resetting everything should clear the issue.
I reinstalled windows 10 in June 2021, but from legacy to legacy, and I had no issues back then. It’s all started when I decided to switch from legacy to UEFI. Somehow it can’t boot normal even in legacy mode anymore
it looks like alienware when POST can’t see my ssd
It might sound strange , but before POST my laptop keyboard color is different and power button led is off, right after POST the color changes as usual, that’s why I thought maybe it something in BIOS, all diagnostics from diagnostic tool laptop passes with no problems
I downgraded my laptop bios from A11 to A10, and after couple of tries and w10 reinstalls my laptop boots right in windows 10 after I press the power button(UEFI MODE). But now when im in windows and I press restart, after POST it says that there is no bootable device, and I need to turn off laptop completely and to turn on. Only after this my windows boots.
In Legacy mode it boots only after:Turn on laptop -> hit F2 -> in Bios press ESC without any changes -> laptop reboots and start boots in windows. (but in legacy mode after i enter in windows I can restart it with no troubles )
crimsom
7 Technologist
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6.1K Posts
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February 13th, 2022 15:00
Hi @nox8315 your initial opening comments were good about converting M.2 drive to GPT partition format which is more reliable and enables BIOS/UEFI fast boot. However there was no mention of creating a clone OS(C:) boot drive as your disaster recovery, should your original OS(C:) boot drive become unrecoverable.
You should consider your disaster recovery options, get different M.2 drive card preinstalled with generic Windows 10 x64 (from eBay, etc.) that can then be updated with system specific drivers, or keep messing around in the hope that your expertise can fix this problem.
As a general rule, never install Dell updates unless there is a new feature you want. BIOS updates should be avoided if your system is healthy. If determined to update BIOS, follow the instructions provided on the BIOS update webpage.
DELL-Cares
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27.6K Posts
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February 13th, 2022 15:00
Hello, we see you are looking for assistance. Click our DELL-Cares username, on the right click, "Send this user a private message". Provide to us the private Dell PC Service Tag.
mattyb3
5 Practitioner
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1.7K Posts
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February 13th, 2022 16:00
Did you disable the Load Legacy Option ROM in the BIOS when you switched to to UEFI? It may not help in this case but it's good to do anyway.
Did you use the Command Prompt to change from MBR to GTP and back again?
I would set the BIOS back to default, format the drive and do a clean Windows reinstallation. It sounds like the system and the drive aren't talking to each other properly so resetting everything should clear the issue.
nox8315
4 Posts
0
February 13th, 2022 22:00
I reinstalled windows 10 in June 2021, but from legacy to legacy, and I had no issues back then. It’s all started when I decided to switch from legacy to UEFI. Somehow it can’t boot normal even in legacy mode anymore
it looks like alienware when POST can’t see my ssd
It might sound strange , but before POST my laptop keyboard color is different and power button led is off, right after POST the color changes as usual, that’s why I thought maybe it something in BIOS, all diagnostics from diagnostic tool laptop passes with no problems
nox8315
4 Posts
0
February 13th, 2022 22:00
Yeah, I disabled legacy mode when switched to UEFI, and yeah, I clear the whole ssd by cmd, and convert from mbr to gpt and back right in cmd
i didn’t clear CMOS ( I mean the battery) cause I don’t know will it help
it looks like alienware when POST can’t see my ssd and run windows from it, but right after restart it runs with no issues
nox8315
4 Posts
0
February 23rd, 2022 05:00
UPD#1
I downgraded my laptop bios from A11 to A10, and after couple of tries and w10 reinstalls my laptop boots right in windows 10 after I press the power button(UEFI MODE). But now when im in windows and I press restart, after POST it says that there is no bootable device, and I need to turn off laptop completely and to turn on. Only after this my windows boots.
In Legacy mode it boots only after:Turn on laptop -> hit F2 -> in Bios press ESC without any changes -> laptop reboots and start boots in windows. (but in legacy mode after i enter in windows I can restart it with no troubles )