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XPS 15 9550 i7 CPU capped to 0.8GHz
Hello,
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,
ejn63
9 Legend
9 Legend
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87.5K Posts
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February 28th, 2017 07:00
Does the system correctly identify the AC adapter, or does it show "unknown"? F2 at powerup to check.
Is this the original Dell AC adapter?
Gonzalo92
2 Posts
0
February 28th, 2017 08:00
Yes, it is the original Dell AC adapter. In the BIOS the adapter is identified as "AC Adapter=130w"; so it seems to be correct.
deanrowe
1 Message
0
July 18th, 2017 23:00
Did you ever find a solution? I'm running into the same problem with the same system.
Thanks
Dean.
samos1111
1 Rookie
1 Rookie
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490 Posts
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July 19th, 2017 06:00
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.