Sorry for going straight for the alternatives, but that sort of money would get you an i5 on the Dell outlet, I’ve had 3 from there, all brand new. Even now, quick check:
Inspiron 15 – 5567
Processor: Intel® Core™ i7-7500U (2 Core,4MB Cache, up to 3.5 GHz)
Windows 10 Home (64bit)
8GB (1x8GB) 2400MHz SDRAM DDR4 Non-ECC
256GB 2.5 inch SATA Class 20 Solid State Drive
8X DVD+/- RW Drive
4GB AMD Radeon R7 M44x
£479
Or if you wanted an i3
Inspiron 15 – 5567
Processor: Intel® Core™ i3-7100U (2 Core,3M Cache, up to 2.40 GHz,15W)
Windows 10 Home (64bit)
8GB (1x8GB) 2400MHz SDRAM DDR4 Non-ECC
1 TB SATA Hard Drive (5400 RPM)
8X DVD+/- RW Drive
£366