Thanks, this is a new build, Win 11, Asus Prime-A, I9 12900K, 32gb DDR5, everything default. I installed all the updates for the MB, & flashed the BIOS, (after BIOS update the problem went away for 3 days). Dealing with this problem I haven't had a chance to think about overclocking. Strange thing to me is, core speed increases to 5ghz when playing a game according to cpu-z. I checked the BIOS, & don't see any boost enabled. Please keep in mind I'm not that skilled in computer building, tweaking. Also, I had this setup running on Win 10, with no freeze problem.