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I have used my laptop for more than 4 years now. It came with the original Windows 10 Home Single Language. Recently there was a new update on Windows 10. I updated it. Since then, Windows 10 doesn't boot. I am sure that the problem is with Windows 10 because I have Phoenix OS and it boot and works perfectly. I use a Dell Inspiron 3542. The problem is that, it won't go passed the Dell loading screen. I have attached an image below. 1st I get to chose what OS I need to boot to. Then when I select Windows10, it keeps on loading for eternity. keeps loading like this, forever

Dave M
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Habinash Hariharan
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  • Hard reboot it 2x in a row (hold down the power button until it shuts off [~7s] as soon as the spinning Windows icon loads) and it will load WinRE if the update wasn't a b-annual update [v20H2, v20H1, etc.] (if the latter is the case, it's likely you'll need to leave it until the OS install is finalized - bi-annual updates are essentially a Repair Install). WinRE will first try Automatic Repair, but if that doesn't work, boot back to WinRE → Advanced → Troubleshooting → Command Prompt → BootRec /FixMBR && BootRec /FixBoot && BootRec /RebuildBCD (remove 2nd command if UEFI) → Reboot – JW0914 Jul 07 '21 at 13:13

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The best thing to do is to download the Windows 10 ISO from Microsoft with the Media Creation Tool and to reinstall Window 10 from a USB made using that tool, keeping your current files.

Before reinstalling, make a disk image in case there is data loss. If you can do so from Phoenix, good; if not, boot from a USB with disk imaging tools such as Linux dd or a Macrium Reflect Free boot device.

If you cannot reinstall from Window 10 ISO on USB, likely you've made some change in the BIOS/UEFI settings to install Phoenix OS, and will need to revert the settings to the original values for Windows. You may lose Phoenix OS, in that case, and will have to reinstall it, or give it up.

DrMoishe Pippik
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  • This is not a solution to a simple boot issue that can be repaired via WinRE/WinPE using WinRE's Automatic Repair or BootRec, BcdEdit, or Sfc. If the BCD Store isn't the issue, it's likely processing a bi-annual update and is still performing one of the seven configuration passes (OP would need to state what update they applied to determine). Windows also natively supports capturing, and applying, an image from WinRE/WinPE via Dism that's more efficient and doesn't rely upon third-party boot media or Linux. – JW0914 Jul 07 '21 at 13:17
  • @JW0914, it is easier to download Macrium Reflect or similar tool and let it build Windows RE (Win PE) and install it to a USB. – DrMoishe Pippik Jul 07 '21 at 19:58
  • How is that easier when all Windows installs come with WinPE installed [WinRE]? It can be accessed in three ways: interrupt the Windows bootloader twice in a row and WinRE auto-loads (same applies if a boot issue prevents Windows from loading twice in a row), hold Shift while selecting Restart from the power menu drop down on the login screen, or from Settings while booted to the OS. – JW0914 Jul 08 '21 at 00:49