Dell Inspiron N5040 Intel Core i3 CPU M 380 @ 2.53GHz, 4 GB RAM, 500 GB HDD with Microsoft Windows 10 Professional and Microsoft Office 2010 Home & Business.
Specs DELL Inspiron n5040 E-450 Notebook 39.6 cm (15.6") AMD E 4 GB DDR3-SDRAM 640 GB HDD Windows 7 Home Premium Black Notebooks (5040-1602)
How to disassemble Dell Inspiron M5040 N5040 – Inside my laptop
Dell Inspiron 15R 15.6″ Laptop – Intel® CoreTM i3-380M 2.53GHz, 4GB DDR3, 640GB Hard Drive, Blu-ray Disc (BD) Combo, Built-in Bluetooth, Windows 7 Home Premium (64-bit) – Red | My Good Laptops