So I built a computer about a week ago and a problem has occurred in the past few days where my fans (all of them?) suddenly go too 100% speed, my monitor stops receiving a signal and I get the click-click-click noise in my headphones. I have monitored my cpu and gpu temperatures and they are both stable. This has happened 3 times so far, twice when playing tf2 and once in csgo, It usually happens around 30 mins to an hour of playtime which is unusual because I played 3 or 4 hours straight on Sunday with no trouble whatsoever. The only cause I can think of is that during the build there weren't enough 6-pin ports for the graphic card because I had to use 2 for the hard drive and ssd. This means that one of the graphics card power slot is supplied through a 2 molex to a 6 pin adapter but I'm not how that could lead to this problem.
Any help is very much appreciated.
EDIT: Both games are maxed at 121 frames.
EDIT 2: So I was in game for at least 2 hours tonight and then with no reason the computer crashed, i could hear a fan whirring inside so i opened it up and it was the graphics card. When I try to restart, the only 2 things that power up are the graphics card and the hard drive.
Specs:
CPU:Intel Xeon E3-1231 V3 3.4GHz Quad-Core Processor
Motherboard: ASRock B85M Pro4 Micro ATX LGA1150 Motherboard
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory
Storage: Crucial MX100 128GB 2.5" Solid State Drive
Storage:Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: XFX Radeon R9 270X 2GB Double Dissipation Video Card
Case:Cooler Master N200 MicroATX Mid Tower Case
Power Supply:Corsair CX 430W 80+ Bronze Certified Semi-Modular ATX Power Supply
Wireless Network Adapter:TP-Link TL-WN851ND 802.11b/g/n PCI Wi-Fi Adapter
Monitor: BenQ RL2455HM 60Hz 24.0" Monitor
Keyboard: Gigabyte Force K3 Wired Gaming