I've been looking all over the internet for days now trying to resolve this problem and decided it's about time i asked directly. What's my problem and how do you fix it. my R9 290 doesn't appear in device manager and doesn't output a signal (monitor turns to sleep mode when plugged into it) I'm pretty sure the wires all work and the 1920x1080 monitor works fine with its DVI single link cable on integrated graphics. I have no idea what to do from this point.
CPU Intel Core i5-4690K 3.5GHz Quad-Core Processor
CPU Cooler Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Motherboard Asus Z97-E ATX LGA1150 Motherboard
RAM Mushkin Enhanced STEALTH 8GB (2 x 4GB) 240-Pin DDR3
Storage Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
Video Card Sapphire Radeon R9 290 4GB Tri-X OC Video Card
Case Corsair 200R ATX Mid Tower Case
Power Supply EVGA 850W 80+ Bronze Certified Semi-Modular ATX Power Supply
CPU Intel Core i5-4690K 3.5GHz Quad-Core Processor
CPU Cooler Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Motherboard Asus Z97-E ATX LGA1150 Motherboard
RAM Mushkin Enhanced STEALTH 8GB (2 x 4GB) 240-Pin DDR3
Storage Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
Video Card Sapphire Radeon R9 290 4GB Tri-X OC Video Card
Case Corsair 200R ATX Mid Tower Case
Power Supply EVGA 850W 80+ Bronze Certified Semi-Modular ATX Power Supply