I have an Acer Aspire 5 with i5-8250u mx 150. My CPU is stuck at 1.58 Ghz. I tried to fix it with intelppm from regedit by setting the start value at 4, but it just got it to 1.80 Ghz. It was working at 3.40 Ghz. Is it the bdProchot? I didn't use it at heavy task so I don't think it was activated by overheating. To mention: with a lenovo t420 with i5-2520m I had it stuck at 0.80 Ghz because the bd prochot was activating when I was forgetting to charge my laptop and it shuted down because it hasn,t had any battery left, I fixed that problem from regedit, intelppm, start value at 4. This thing happened with this laptop, the Acer , the shut down because it was left out of battery, so I tried the same strategy but it didn't work. What can I do?