i know nothing about computers, this is an Hp 255 g7. ok so i've removed the battery. starting it up it said boot device not connected then switched to a screen that
Laptop HP 255 G7 8MJ07EA 15.6"/AMD A4/8 GB/256 GB M2)
HP 255 G7 AMD Ryzen 3, 15.6", 8GB RAM, 256GB SSD, Windows 10, Notebook - Black : Amazon.co.uk: Computers & Accessories
HP 255 G7 in review: Multiple weaknesses, no strengths - NotebookCheck.net Reviews
HP 255 G7 15.6 in (500GB HDD, AMD A4 Dual-Core, 2.30 GHz, 4GB) Laptop - Dark ash 193808659034 | eBay