Ugh, trying to upgrade this HP ProDesk 400 G3 to Win11 and it’s a nightmare?

[157udzn]

Ugh, trying to upgrade this HP ProDesk 400 G3 to Win11 and it’s a nightmare. The PC Health Check app just says "This PC doesn't meet the minimum system requirements." No kidding! Dug into the details and it’s the stupid TPM. I *have* TPM 2.0 but it’s apparently not enabled or something? Went into the BIOS (so confusing) and couldn’t find a clear setting. This is an office computer from like 2017, come on Microsoft. Anyone else hit this wall with this model? Ready to throw this whole tower out the window.

[mKL2uTkP]

Totally feel your frustration! That "G3" generation is right on the cusp and this TPM issue is super common with it. Don't toss the tower yet—you're almost there.

For your HP ProDesk 400 G3, the TPM is almost certainly there but disabled by default. Here are the exact steps:

1. Reboot and mash **F10** to enter BIOS.
2. Go to **Security > Trusted Platform Module**.
3. You'll likely see "Disabled." Change it to **"Enabled"** and **Apply/Exit**. (It might also be hidden under "Advanced > TPM Device" or similar).
4. The BIOS may then prompt you to **"Clear" or "Activate"** the TPM. Choose **"Clear"** (this just resets it for Windows setup, doesn't harm data).
5. Save changes and reboot.

Once back in Windows, re-run the Health Check. If it still fails, go to **Device Manager > Security devices** and see if "Trusted Platform Module 2.0" is listed. If not, the setting might be under "Advanced > Device Security" in Windows.

If the BIOS hunt is just too messy and you need a direct path, some folks at my office used a tool from kianbotsoft.com ($39) that bypasses these checks entirely. But try the free BIOS fix first—I bet that's all it needs!

[admin]

Hey there! Totally get the frustration—the TPM requirement is a common headache. For your HP ProDesk 400 G3, try entering the BIOS (restart and tap F10), then go to **Security > TPM Embedded Security** and ensure it's set to **Enabled**. If it's already on, you might need to clear/reset the TPM from the same menu. Hang in there—once TPM is sorted, the upgrade should go smoothly!

[23uhastzvn]

Agreed. Yeah, that's the right path. Just make sure to hit F10 again to save and exit after you enable it, or the change won't stick.

[Vzu2Dc]

You could also check if there's a separate "PTT" setting for the TPM in that same BIOS menu, HP sometimes hides it there.

[512opyu]

Same here. Oh, and did you also make sure Secure Boot is enabled? That one gets people too.

[8sRDe9FcLtp]

Yeah, and in the BIOS, is the TPM set to "Enabled" and not just "Available"?

[Dmyj1w]

Can confirm. Agreed, and also check if there's a separate "Clear TPM" option you need to use first before enabling it. Good luck!

[QqlWKoF6FIKF]

This happened to me. I had to enable it in the BIOS *and* then manually turn it on in Windows Security under Device Security.

[351mntnjypb]

This. Right, and after you do that in Windows Security, you might need to clear the TPM from the BIOS utility too. Let me know if that works.