Thinkpads Forum

I've noticed that simply running the power manager software (via double clicking on the battery icon or starting from the start menu) causes the CPU load on the system to go quite high.

It's ironic, since I use that software to find out what the current wattage/draw of the system is ... but when I run it, it hogs one core of the CPU completely, which (if you have speedStep turned on like I do) dramatically increases the power consumption.

Has anyone seen anything similar to this before? Is there any mechanism for reporting this to Lenovo (or is it even worth bothering with)

I have the same problem. My pc is Windows 7 x64. And I found the problem is caused by some wrong config of .net 3.5(in my pc), the detail is something wrong with presentationframework.dll of .net . The solution is "remove .net 3.5 and reinstall it".

in windows 7, I use "turn windows feather on and off" and find ".net 3.5" , then just click to turn it off. reboot pc. and then click to turn it on. reboot pc. Then pwmui.exe can show the user interface normally.

And I finally found the problem maybe cause by PresentationFontCache.exe(FontCache3.0.0.0 service)

we need to stop FontCache3.0.0.0 service. and deleting the file it creates: Windows\ServiceProfiles\LocalService\AppData\Local\FontCache3.0.0.0.dat and restarting the service

after that it may ok.

excellent -- my problem disappeared at some point between my original post and your reply, but I'm pretty sure it's because I reinstalled/upgraded/cleaned up the dot-net installation. thanks for the post!