Could someone spare a minute of time for me and test something?
->Requirement: Lenovo t540p with windows installed.
->connect the power, remove the battery, boot windows.
->open task manager, go to the performance tab where (at least on win8) you see the frequency the cpu is currently running at, it should be 0.75GHz when idle.
->open cmd and fire the following command
@echo off & for /l %a in (0,0,1) do echo Test
***keep it running***
->Now please watch the CPU frequency - what does it run at now?
->(only) If at 3.5 GHz, please reply here what Bios version you use and what OS (if unsure, start msinfo32.exe to see).