Stuck in bootloop unable to reinstall win 11

[Michaelbarth1]

So after the windows 11 update in August, I had to replace both my SSD and HDD and still I am unable to boot windows 11 it gets stuck in a bootloop loop, sometimes at 10% sometimes at 70% it’s very random when it will just restart the PC. I ran the DX and both drives are active and running 

[Samrit26]

Hello,

That’s a good summary, and since both drives are new and pass diagnostics, what you’re describing — random reboots during Windows 11 installation or startup (stuck between 10–70%) — almost never comes down to storage anymore. It usually points to a firmware, power, or memory instability that started after the August 2025 cumulative updates and BIOS–OS interaction changes.

Let’s isolate this methodically.

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1. Confirm the environment

Can you share the exact model of your system (for example, “OMEN 15-en0036ax” as before)? I’ll tailor BIOS and driver versions precisely.

For now, assume it’s the same model. That unit uses Ryzen 4000-series (R7-4800H) with NVIDIA GTX 1660Ti graphics and an Insyde BIOS.

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2. Key causes of random reboot loops after clean drive replacement

• BIOS F.25/F.26+ power-state bug: The August Windows update started using Modern Standby calls earlier in the boot sequence. Old BIOS revisions can trigger CPU package C-state hangups that look like random resets.

• Mixed storage controller mode: If BIOS is set to RAID instead of AHCI (or vice-versa), Windows Setup can load the wrong driver and reset during storage initialization.

• Corrupted TPM/NVRAM variables: After replacing drives, the OS installer re-initializes Secure Boot and TPM keys; stale keys can crash the boot process.

• Defective RAM or unstable XMP profile: Even one unstable memory module can cause the installation to restart at random percentages.

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3. Recommended next steps

1. Enter BIOS (F10) and:

   • Load Setup Defaults.

   • Ensure Storage Controller Mode = AHCI.

   • Temporarily disable Secure Boot.

   • If you see an option for UEFI Hybrid (CSM), keep it disabled (UEFI only).

   • Check that BIOS version is at least F.27. If older, update using HP BIOS Update Utility from a USB drive.

2. Reset the TPM and NVRAM:

   • In BIOS Security → Clear TPM → Accept.

   • Power off, then hold Win + V and Power for ~10 seconds to clear NVRAM.

3. Run memory diagnostics:

   • Press Esc → F2 → Component Tests → Memory Test (Extensive).

   • If any error appears, that’s your culprit.

4. Reinstall Windows cleanly:

   • Use Windows 11 23H2 media created from Microsoft’s Media Creation Tool.

   • Delete all partitions on the new SSD during installation (let Windows create them).

   • Install with only the SSD connected (disconnect the HDD temporarily).

5. After installation, install the AMD chipset and graphics drivers from HP Support (not Windows Update).

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4. If the issue persists

If the system still reboots randomly before setup completes, then the fault is on the motherboard (power rail, CPU VRM, or embedded controller not stable). At that stage, it’s a hardware fault and the only option is depot repair (ship to HP’s repair center).