I would just do a new one, for less than 1K you have amazing gaming / editing rig.
PCPartPicker part list:
https://pcpartpicker.com/list/nYVhXH
Price breakdown by merchant: https://pcpartpicker.com/list/nYVhXH/by_merchant/
CPU: AMD - Ryzen 5 1600 3.2GHz 6-Core Processor ($199.99 @ SuperBiiz)
Motherboard: ASRock - Fatal1ty AB350 Gaming K4 ATX AM4 Motherboard ($98.98 @ Newegg)
Memory: Corsair - Vengeance LED 16GB (2 x 8GB) DDR4-2666 Memory ($102.99 @ Amazon)
Storage: Kingston - A400 240GB 2.5" Solid State Drive ($79.99 @ Best Buy)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($74.00 @ B&H)
Video Card: Asus - Radeon RX 580 8GB ROG STRIX Video Card ($280.98 @ Directron)
Case: Fractal Design - Define R5 Blackout Edition ATX Mid Tower Case ($99.99 @ Newegg)
Power Supply: *SeaSonic - G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($49.90 @ Newegg)
Total: $986.82
Prices include shipping, taxes, and discounts when available
*Lowest price parts chosen from parametric criteria
Generated by PCPartPicker 2017-07-04 17:50 EDT-0400