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My dell vostro 14 3430 lock refresh rate 60hz at Full HD using HDMI. External Monitor has 144hz at 1080
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Hello SANGVT,
Let's further investigate this situation of yours. Please provide the following information by answering my questions below:
- What Intel graphics driver you are currently using?
- Have you tried using different monitor?
- Upon checking on your laptop manufacturer, you are using a GeForce MX550 as your discrete graphics card, have you contact your laptop manufacturer about this?
- Have you tried using different display adapter?
I am looking forward hearing from you.
Best regards,
Dhanniel M.
Intel Customer Support Technician
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Dell Vostro 3400 Setup and specifications guide
Unfortunately, this video output is the only one on this Dell model, so you will have to live with the limitation of 1080p @ 60 Hz.
This limit is not caused by the Intel graphics integrated in the processor, but by the components that Dell uses to route the signal from the processor to the physical connector.
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Try 32.0.101.5768.
All new WHQL!!! releases since this breaks my Monitor Refresh rate to a maximum of 60Hz, just the same.
I had to go back to 32.0.101.5768 to regain 100Hz refresh.
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Hello SANGVT,
I wanted to check if you have the chance to review the questions that I have posted. Let me know if at your earliest convenience so we can determine the next course of action to resolve this matter.
Best regards,
Dhanniel M.
Intel Customer Support Technician
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Hello SANGVT,
Since I haven't heard back from you, I will be closing this thread. Though if you have other inquiries or further assistance, please submit a new post as this thread will no longer be monitored.
Best regards,
Dhanniel M.
Intel Customer Support Technician

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