Clarion5

The latest BIOS, Version 1704, was installed upon initial setup of the PC.

Bottom Line Up Front (BLUF): -CPU frequencies drop and spike to unexplained values which has recently caused the PC to display a blank screen (red CPU LED illuminates on Motherboard). System Specifications: CPU: Intel Core i7-9800X Motherboard: Asus TUF X299 Mark 1 (BIOS 1704) RAM: 8x4GB Corsair Vengeance LPX 2666MHz GPU: Asus ROG Strix GTX 1080 Ti O11G Boot: Samsung SSD 970 EVO 2TB (M.2 NVMe), PSU: Antec HCP-850 Platinum Operating System: Windows 10 Pro 64-bit (Version 1809) Background: - CPUID HWMonitor is regularly used in-game and during stress tests to evaluate PC performance. Typical idle/minimum frequency is 1.2GHz, and typical maximum frequency is 4.5GHz. -- The display will appear to stutter during certain games/applications which signals a drop or spike in CPU frequency. --- When the stutter occurs in World of Warships, HWMonitor will show Min CPU clock creep lower and lower every time the display stutters. Minimum CPU frequency will be reported as 1.2GHz for extended periods prior to gaming. While gaming, CPU clocks will dip below 1.2GHz (450MHz - 950MHz is common). --- When the stutter occurs in The Division 2, HWMonitor will show Max CPU clock spike above the maximum CPU turbo frequency. Spikes over 5GHz will eventually have occurred on all physical cores. -- As of 9 June 2019, CPU frequency spikes have caused blanks screens followed by illumination of the red CPU LED on the motherboard. --- In BIOS, RAM was previously set to XMP Profile 1 and CPU was set to sync all cores (@ 4.5GHz); no other settings were altered. Under these settings, the blank screen would occur mid-operation (i.e. YouTube video) and force a manual hard reboot. ---- Despite the blank screen all other components appear normal/active (CPU fans spin, GPU LED's illuminated, SSD status light illuminated, Mobo LED's illuminated). --- In BIOS, RAM has been rotated through XMP Profile 1 and 2 (for the purpose of troubleshooting), and the CPU has been set to auto (stock settings). Under these settings the blank screen, and subsequent red LED, have not occurred, but CPU drops and spikes are still observed. ---- A 10 minute stress test was performed with the Intel Extreme Tuning Utility. CPU frequencies above 6.5GHz were observed during/after the test (see attached pictures). ---- The Intel Processor Diagnostic Tool was run with all tests successfully passed. CPU frequencies between 718MHz and 5.7GHz were observed during/after the test (see attached pictures). - CPU, Motherboard, RAM, and Boot drive were purchased March 2019. - GPU was purchased November 2017. - PSU was purchased July 2015. Questions: - Does the above information indicate a potential issue with power delivery from the PSU, VRM's on the Motherboard, or CPU defect? - What tests or troubleshooting steps can be taken to diagnose the problem? Intel Processor Diagnostic Tool Test Results.TXT

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