Question Display Shuts off and Fans running on 100% even in IDLE state or within 20 sec after bootup.

Dec 1, 2023
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Hi,
My Build is CPU: R7 3700X, GPU: RTX 2060, Power Supply: 650Watt 80 Plus Bronze

Previously I encountered a sudden shutdown while playing CS2 and then the graphic card stopped working showing no signal. Show I RMA the graphic card and received a replacement of the same RTX 2060. Now on 1st boot, it worked fine then it crashed again, then i restarted the computer and it worked for good 4 hrs of gaming, Temp never hit above 70 degree celsius even on load. for 1 day it worked like crashed a couple of time. Now after 1 day the crashing became frequent and now its either not starting or when starts it crashes within seconds. Motherboard showing white light on VGA. So what could be the problems, I think thermals are not a problem as it is crashing in idle state. Should I again send the graphic card for RMA or buy new PCI E Cable or PSU.