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NB your rig is IvyBridge though Intel® Core™ i3-3227U Processor (3M Cache, 1.90 GHz) Specifications
Your BIOS is up-to-date?
This message was posted on behalf of Intel Corporation
Stefan3D, thanks for your collaboration.
In regard to your concern, please add all the additional information over this thread https://communities.intel.com/thread/110386.
Please do not hesitate to add any additional information over that thread, in order to give the proper follow up to your concern.
Thank you for your reply.
I saw that specifications. And Intel HD 4000 have to boost to 1100 Mhz, But it doesn't.
I'll post this thread in that forum you provide me.
And yes, BIOS is up to date
Also I tried to change my AC power adapter and it didn't help. I think it's intel hd 4000's problem....From battery 1100 Mhz, from AC power not boosting (350 Mhz)...