Here's good article about CPU C- and P-states (C = sleep, P = power) but do note that this article goes in-depth explaining it all,ĭo note that each CPU may have different sleep states. C1 is the first idle state, C2 the second, and so on, where more power saving actions are taken for numerically higher C-states. C0 is the operational state, meaning that the CPU is doing useful work. For permanent fix, you're looking towards new PSU since disabling higher sleep states can play a role in CPU's longevity.ĬPU C-states are used to save power when the processor is idle. Full specs with pics in my sig.)Ĭlick to expand.Disabling C6 and higher sleep states from BIOS is temporary and not a permanent fix. (All my 3 PCs: Skylake, Haswell and AMD are also powered by Seasonic. As far as how good build quality Corsair CX-450 has, all you need to do is to look at warranty given to it: Since PSU powers everything, it is the most important component inside the PC.
Note: if the issue is within software, new PSU doesn't fix your issue but it does keep your PC components safer for years to come. In a gaming PC, i wouldn't use anything below good quality PSU. While it can be used just fine in an office PC that never sees any high loads using CX-series in a gaming PC, where PSU does see high loads, is a bad idea. Personally, i'd go with better PSU (any Seasonic unit in 500W range would do, e.g Focus/Focus+ 550) since Corsair CX450, at best, is mediocre quality PSU. Buy a new, better build quality PSU that does support CPU C6/C7 sleep states.Disable C6/C7 sleep states within BIOS.It manifests as BSoD or black screen on wake up.
Some PSUs, especially older and/or lower build quality units doesn't support CPU C6/C7 sleep states. If issue is with hardware, your PSU is the culprit. Your issue could be either with software or hardware.
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