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May 23rd, 2020 00:00
Inspiron 15 7590 chirping
The computer chirps after a short warm-up period when connected to the power adapter (130w). The noise comes from the left side (where HDMI and USB-C ports are). In battery operation the chirping is much quieter. Built-in Micron 2200S NVMe 1024GB, no additional HDD, 16 GB RAM, everything as ordered, no retrofitting.
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May 25th, 2020 13:00
The reason for me was the C-State. If it is enabled, the CPU makes that noise. Power consumption may go up, but I enjoy the silence.
https://www.dell.com/support/article/en-us/qna41893/what-is-the-c-state?lang=en