Don't assume just because your PC has worked for 3 years that is not your PC. Changes happen, settings change, apps and overclocking apps that don't play nice with vr, hardware degrades, windows updates happen which can break things temporarily. USB ports can also go bad, consider switching ports, I can't remember if the S had USB like the cv1.
Hard to narrow down the cause, but all I'm saying is don't rule out the PC when looking for a solution.
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