new build 2.0

Hey there, Im looking to upgrade my system. Currently i got a i7-8700 sitting on a TUF Z370 Pro Gaming mobo, a 7900 XT, and 32GB DDR4 RAM. The system is plenty capable to do my daily tasks and gaming. However.. i have some money burning a hole in my pocket that i wanted to spend it getting...

A first time builder brought me a PC to look over in April. Specs are as follows: Micro ATX Cooler Master case, Asus TUF B450M-Pro mobo, Ryzen 5 1600, 16GB T-Force DDR4 3200 (2x8), Nvidia Quadro M4000 GPU, Zumaxpower 550W PSU (I think, it could have been another one), PNY 240GB 2.5" SSD, 1TB...

my hard drive comes up with an error when i try to allocate the extra space the space i want to allocate is 1.8tb and it just doesnt let me allocate it i have tried wiping the drive, changing the sata ports but cant change the cables because i dont have any others