The TDP limit adjustments stay in place following a Windows reinstall.
The TDP limit adjustments stay in place following a Windows reinstall.
I recently acquired a new Lenovo ThinkPad T14 Gen 2 AMD with a Ryzen 5850U processor. The default TDP values were limiting performance, reaching power thresholds before thermal limits. I gradually tweaked the TDP settings using ryanadj, but found that Universal x86 Tuning Utility was more user-friendly.
During stress tests, my system would crash only when CPU, GPU, and VRAM were tested together. I rebooted to reset the settings, but UXTU’s auto-application feature failed to restore them properly. Even after disabling it, the issue persisted. When I reinstalled Windows via a clean copy on a new SSD (with old apps and settings migrated), the problem continued.
I then reset the BIOS to default and booted from the restoration media. This completely erased my drive and reinstalled the original Windows 10 Pro that came with the laptop. I upgraded to Windows 11 without migrating settings, yet when plugging in the device again, performance limits increased significantly—PPT fast limit reached 30, slow limit 24, and TCTL temp limit jumped to 96. After a minute on charge, it seemed to revert to stock settings, but whenever I connected it again, they rose once more.
I suspect an instruction might be stored in the BIOS and not being cleared from the SSD. Any advice on resolving this would be greatly appreciated. Are you interpreting this correctly? Thank you.
My bios is fully current, and I tried a full reset by removing the regular and CMOS battery for 15 hours, then booting again after shutting down and reinserting the batteries. I also reset from within the BIOS. When I download the Lenovo BIOS update and apply it, it confirms my bios matches the update exactly. I'm puzzled about this. I've heard about BIOS reset jumpers or shorting pins but couldn't find any specific instructions for my laptop.
Welcome to the forums, newcomer!
Here’s the information you requested:
The ThinkPad T14 Gen 2 has a pinhole button that assists in resetting or clearing the CMOS. Turn off the laptop, unplug it from the power source, and hold down the pinhole button on the underside for about 30 seconds.
I recently ordered specific factory restoration media from Lenovo, reset the BIOS to default settings, and booted into the provided media. This process completely erased my drive and reinstalled the original Windows 10 Pro that came with my computer. I then upgraded to Windows 11 without migrating my previous configurations.
Upon plugging in again, my performance metrics—PPT fast limit, stapm limit, and ppt slow limit—ranged up to 30, 24, and 96 respectively. After a minute on the charger, the system returned to its original settings, but whenever I connected it again, the values increased once more. (I’m using ryzenadj for monitoring.)
For those who upgraded via internal methods, it’s recommended to reinstall Windows 11 to fix any potential corruption. You should also recreate your bootable USB installer for Windows 11, install the OS in offline mode, and manually add all necessary drivers with the latest versions in an elevated command prompt (Right-click installer > Run as Administrator).