@Alain054 glad you solved it. Did you try the BIOS Switch button next to front panel IO? I keep un modded 1601 on my backup bios.
All of the i7 series are such integrated from each internal to external component. That if any one interconnect or component is flaky, then your gonna random issues.
All of the i7 series are such integrated from each internal to external component. That if any one interconnect or component is flaky, then your gonna random issues.