Why Crashes??? Is it Graphics Card or PSU?

[AvengerPilotMilo]

Alright so My games seem to Crash after about 20-30 minutes and I was wondering if it is either the graphics card isnt seatedproperly/the graphics card port is bad and I need to conncet it to a different port, or if it is The monitor being old, or if it is my new PSU and Since I switched from a 600 watt Underpowerd system to a 1300 well powered system maybe I need to clear the CMOS? Also Windows Stuters sometimes and just crahsesand I have to wait like 5 minutes for it to uncrash and recover from its crahsed stupor...Can someone please HALP

 

[AvengerPilotMilo]

System SOrry I forgot
System:
MOTHERBOARD:ASRock 990FX Extreme3 AMD 990FX ATX w/ UEFI Bios, XFast Technologies, GbLAN, 3x PCIe x16, 1 PCIe x1 & 2 PCI

POWERSUPPLY: 1300 Watt EVGA 80 plus

CPU: AMD FX-9590 4.70 GHz (5.0GHz Turbo) Eight-Core AM3+ CPU 8MB L2 Cache & Turbo Core Technology

FAN: Asetek 550LC 120mm Liquid Cooling CPU Cooler (Single Standard 120MM Fan)

RAM: 16GB (8GBx2) DDR3/2133MHz Dual Channel Memory [+143] (G.SKILL Ripjaws X)

VIDEO CARD: XFX Double D AMD Radeon R9 280 3GB GDDR5 PCIe 3.0 x16 Video Card (Single Card)

HDD: 2TB (2TBx1) SATA-III 6.0Gb/s 64MB Cache 7200RPM HDD (Single Drive)

CD: LG 12X Internal Blu-ray Drive & DVDRW, 3D Playback Combo Drive

 

[hang-the-9]

If Windows crashes even not in games, first thing to do is re-install Windows clean. A new EVGA PSU should be fine although a 1300 watt unit is hugely overpowered for your system unless you are going to install a second 280, even then it's probably 400 watts more than what you need. Clean setup of Windows, clean out the case, re-install the CPU heatsink with new heat grease.

If the system still crashes on a clean setup of Windows and a clean case/heatsink, check the RAM one stick at a time.