Windows 10 update problem leading to CPU throttling
Windows 10 update problem leading to CPU throttling
I've experienced problems with my CPU slowing down after the Windows update in mid-January. My new PC was built in late December, and everything functioned properly until I installed the latest version. I noticed the CPU speed was limited to 0.37ghz. After adjusting the BIOS settings to disable thermal throttling, it increased to 0.78ghz. I suspect this is related to the Windows update because every time I remove the update, everything resumes normal operation. However, Windows seems to auto-update itself periodically even when I turn off automatic updates. I've tried uninstalling from the control panel, using advanced startup options, and running WUSA as administrator, but it always indicates the update is necessary. There might be a compatibility issue that requires driver updates. I'm currently on KB5017308 (22H2) and KB5017022 (22H2). Uninstalling hasn't resolved the problem, and my temperatures remain stable even at high loads. My power plans are set to prevent throttling, and ThrottleStop isn't working due to a BIOS restriction. It appears a specific part of this update is interfering with the thermal sensor on my motherboard, causing the CPU to perceive overheating and reduce performance. Any advice would be greatly appreciated!
Yes, you can adjust your CPU's speed settings in the BIOS to return it to normal operation.
You're new to overclocking, which is great! Do you have a particular motherboard in mind for your build?
Are you seeing red signals in ThrottleStop? Many MSI boards from the past decade have experienced BD PROCHOT throttling problems. When a faulty external sensor activates, it continuously sends throttling commands to the CPU via the BD PROCHOT pathway. Previously, ThrottleStop allowed blocking these signals from reaching the CPU. Most 12th and 13th generation boards now lock the BD PROCHOT register, making it impossible to disable this issue. On older MSI boards, a LN2 switch existed that could degrade or fail over time. Refer to your manual to confirm if your board has one. If you can locate it, toggle it on and off 101 times. This issue doesn’t seem linked to Windows updates; it’s usually a defective sensor that can occur unexpectedly, even on new hardware. It may happen sporadically, but persistent throttling often remains unresolved. Be ready to return the board for an RMA. BD PROCHOT is generally not temperature dependent.
Yes BD-PROCHOT is lit up. My motherboard is (or I assume so) built by Gigabyte, but yeah same story - it's unable to disable BD-PROOCHOT. I don't think it has a LN2 switch either unfortunately. If uninstalling the Windows update fixes the issues, could it still be a sensor problem? I had absolutely no problems whatsoever with my rig until the day I updated my Windows for the first time since building it.