My XPS 15 (i7 6700hq) is performing very poorly lately. I used to have issues when alternating from power to battery use and CPU would get stacked at 0.8GHz.
Now, CPU won't go above 0.8GHz no matter what I do, making the laptop unusable for demanding tasks.
I have tried unabling SpeedStep and TurboBoost, updating BIOS and changing power profiles; nothing works though.
I need help please.
Thank you in advance,
A known issue. Open the bottom cover and disconnect the battery for a while. Not difficult, the service manual is available online if you need detailed instructions.