windows 11 Random crashes on newly built PC

[Guest CallumS25]

Hi all,I've just built a new PC, and it's crashing fairly frequently. It happens at random (sometimes at sign-in, other times I can use it with no problems for an hour or two), it instantly shuts down to a black screen then restarts. It's accompanied by a kind of clicking sound that seems to be coming from the inbuilt speakers in one monitor (rather than any component in the PC). I did try unplugging that monitor but the PC still crashed, just without the sound.I was initially running Windows 10. It often crashed with no error message, but I did get code 0xc0000098 a couple of times, with text

 

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