Wonder Dell Inspiron 15 7000 (7559) model that listed on Dell sg website will have the same fan noise and overheat issues as Inspiron 15 7000 (7548) model.
The issues of Dell Inspiron 15 7000 (7548) model:
- Fan would crank on and then off and the cycle of on and off would be repeated even the user do nothing.
- When using anything that puts load on the CPU, the temperature going above it's maximum 105°C
The user mentioned latest BIOS update did not help in solving the problem of Inspiron 15 7000 (7548), even a brand new replacement set also having the same issues.

Just a sharing, It could be this issue has been overreact.

Or may be Dell had fixed the problem after 7548 model.