Problem with PC not starting after CPU upgrade and TPM activation.
Problem with PC not starting after CPU upgrade and TPM activation.
I recently upgraded my Dell Inspiron 5675 with a new Ryzen 7 1700x, replacing the Ryzen 3 1200. Initially, I received a prompt asking if I wanted to reset my fTPM keys. When I agreed, I didn’t know what bitlocker was or how it worked, and my PC failed to start Windows 11. Now it keeps looping indefinitely with ‘Preparing automatic repair’. After some effort, I eventually reinstalled Windows, but even then, enabling TPM in the BIOS didn’t break the cycle. Booting with the new CPU worked fine, so it seems the issue isn’t specific to the first-gen Ryzen model. I’ve tried various solutions online, but none resolved the problem. My BIOS is current to version 1.5.0 and Secure Boot is active.
After installing the new CPU, have you reinitialized the BIOS settings?
I changed the Secure Boot keys but left the full BIOS unchanged. I plan to attempt that again tomorrow. If it fails, what other options might be available?
Hello
@lloyd2k,
I hope you're doing well today. I'm
@Vikko151, a newcomer but still eager to assist. 😉
When you turn on fTPM, it displays "Preparing Automatic Repair". This raises my concern about a potential CPU incompatibility. The Ryzen 7 1700X isn't officially compatible with Windows 11, though I'm confident it can handle it. I've run Windows 11 for nearly six months on an i7-4790 without any issues. However, the issue seems linked to the fTMP. It's likely that Windows 11 doesn't support it properly. You might want to check if any of these fixes work:
1. Attempt a Windows 11 installation using the installation key. The "Repair this PC" option is available right after setting your language preferences. Follow steps a) through d) to access repair, then proceed with automatic repair. If that fails, explore online solutions like "sfc /scannow" or "DISM /Online /Cleanup-Image /RestoreHealth".
2. Do you have another drive? Try installing Windows 10 there. If the OS still doesn't work, create a new partition on your system drive using:
a) Insert the installation key.
b) Boot from the USB drive.
c) Press F12 to open the boot menu (specifically for a Dell Inspiron).
d) Select "Repair this PC" and follow the prompts.
e) Navigate to "Troubleshooting" and use the Command Prompt.
f) Since partitioning won't help, run diskpart, type "diskpart", then "list volume". Identify your system partition (usually labeled C) and note its size (y).
g) Use "select volume x" with the correct number.
h) Enter "shrink desired=0.5y" (convert y from GB to MB).
i) After calculation, restart and try Windows 10 installation again.
2. Once the volume is halved, restart and press F12 to install Windows 10.
3. Proceed with the normal setup, installing Windows 10 on the unallocated space. Click "New" in the relevant area to access it.
- If you see only volumes listed, choose the second option.
- Shrinking a volume leaves extra space after reduction.
If everything works smoothly on Windows 10 with fTPM enabled, continue using it. Otherwise, consider alternative approaches.
I trust this detailed guidance will be useful, and have a great day!