⚡ Essential Pre-Flight Check
- 📂 Partition: Check MBR/GPT table. If MBR, convert to GPT immediately. This is a hard requirement for UEFI booting and Windows 11 compatibility.
- 🔐 TPM Version: If version is 1.2, you MUST clear the 1.2 state in BIOS/Windows before attempting an upgrade to 2.0. Version 2.0 is the official standard.
- 💾 Firmware: Update BIOS to the latest version. In specific cases (like Dell), you may need an incremental update path (installing a lower version before the final TPM 2.0 update).
- 📜 Registry: Prepare the bypass batch file/command to inject into the installer if using unsupported hardware (CPU/RAM checks).
- 🖥️ BIOS Mode: Switch Boot Mode to UEFI. Legacy/CSM is no longer supported for Windows 11.
Phase 1
💽 Hard Drive Partition Conversion (MBR to GPT)
Windows 11 requires GPT. Do not confuse this with "Chat GPT" — this is your disk's internal logic!
1. Check Current Status
- Right-click Start > Disk Management.
- Right-click your Boot Disk (e.g., "Disk 0") > Properties > Volumes.
- Check Partition style. If it is MBR, you must convert.
2. Detailed Conversion Steps
- Open Command Prompt (Admin).
- Run validation:
mbr2gpt /validate /allowFullOS
- Run conversion:
mbr2gpt /convert /allowFullOS
- Important: Immediately restart and switch your BIOS to UEFI mode or the system won't boot!
Phase 2
🔑 Getting Your BitLocker Recovery Key
Before clearing TPM 1.2, you must secure your 48-digit recovery key or you will be locked out of your data permanently.
Check these locations:
- Microsoft Account: Visit account.microsoft.com/devices/recoverykey on a phone or other PC.
- Command Prompt: Run
manage-bde -protectors -get C: to see your key while logged in.
- Active Directory: Check your company's IT portal if it's a work device.
Phase 3
⚙️ BIOS Update & TPM 2.0 Configuration
Update your firmware and enable the security chip.
- BIOS Flash: Download latest firmware. Format USB as FAT32. Use the BIOS flash utility (F12 on Dell).
- TPM 1.2 Clear: If on 1.2, clear it in BIOS or via
tpm.msc before toggling 2.0.
- PTT/fTPM: In BIOS, look for Intel Platform Trust Technology (PTT) or AMD fTPM and set to Enabled.
Phase 4
🛡️ Enabling Secure Boot Process
Secure Boot ensures only trusted software boots on your device.
- Restart and enter BIOS (see keys below).
- Navigate to the Boot or Security tab.
- Locate Secure Boot and set it to Enabled.
- If "Disabled" and greyed out, set a BIOS Supervisor/Admin Password first.
- Save and Exit (usually F10).
Phase 5
🚀 Registry Bypass (Unattended Installation)
Force the installer to ignore CPU and TPM checks.
- Boot from Win11 USB. At the language screen, press Shift + F10.
- Type this exact command to bypass requirements:
reg add HKLM\SYSTEM\Setup\MoSetup /v AllowUpgradesWithUnsupportedTPMOrCPU /t REG_DWORD /d 1 /f
Emergency Recovery
🆘 BIOS Reset Guide (The Jumper Method)
If your system fails to boot after settings changes, you must reset the CMOS.
1. Mandatory Safety & Drive Prep ⚠️
- Disconnect ALL Storage Drives: Unplug SATA cables or remove M.2 SSDs to protect data.
- Power Down: Unplug the PSU and hold the power button for 15s to discharge electricity.
2. The Jumper Reset Procedure
Find the 2 or 3 pins labeled CLR_CMOS or JBAT1 near the coin battery.
| Jumper Type |
Reset Procedure |
| 3-Pin Layout |
Move jumper from Pins 1-2 to Pins 2-3. Wait 15 seconds. Move it back to Pins 1-2. |
| 2-Pin Layout |
Use a screwdriver or jumper cap to short (connect) the two pins for 15 seconds. Remove the bridge. |
*Note: If no jumper exists, remove the silver CR2032 Coin Battery for 10 minutes.