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CPU clock speed stuck low. Have tried everything I can think of and find online without success, any ideas?

pyrojoe34

System:

Dell Latitude E6530

-i7-3520M (2.9Ghz base, 3.6Ghz turbo)

-8GB DDR3-1600

-Nvidia NVS 5200M + Intel HD 4000 (both drivers up to date)

-Win 10 Pro 64bit (latest stable build)

 

Problem:

My CPU clock refuses to go above 1.19Ghz (confirmed by task manager, HWinfo and AIDA64). When running Cinebench the system is clearly throttled as the score is almost half the score of my i5-2410M laptop and the CPU usage never goes above 41%.

 

What I have tried without success:

-Fresh Windows install (twice) once without internet to rule out automatic driver download issues.

-Flash BIOS to latest version.

-Install IME and chipset driver.

-Cleared CMOS and removed CMOS battery for 30 sec.

-Switched power settings to "high performance".

-Made sure power supply is adequate (confirmed at 90W as required).

-Checked BIOS for any settings that may be the issues.

-Turned on and off EIST and C-states.

-Replaced thermal paste on CPU, GPU, and chipset. Checked fan function and monitored temps (never went above 50-60C while running Cinebench). It's not a thermal issue.

-Ran Windows Mem diagnostic and built in BIOS-based, Dell full hardware diagnostic utility with no errors.

-Tried it both on wall power and battery power.

 

What kinda works:

-The only thing that kinda works is booting into safe mode which allows to CPU to run at 2.9Ghz (the normal base clock). It won't turbo above that but at least it can do the base clock.

 

 

This leads me to believe it must be a software conflict (which with a fresh, vanilla install doesn't seem likely), or an issue with a service or Windows default driver causing the issue, but I can't figure it out. I would rather not go through each service one by one, disable, restart, and try again to find the issue. Is there a better way to diagnose this problem?

I have looked all over many forums and found other people with similar issues but none were the same as mine (theirs was power saving settings or wrong power supply wattage).

I could really use some help figuring this out, thanks in advance.

Primary PC-

CPU: Intel i7-6800k @ 4.2-4.4Ghz   CPU COOLER: Bequiet Dark Rock Pro 4   MOBO: MSI X99A SLI Plus   RAM: 32GB Corsair Vengeance LPX quad-channel DDR4-2800  GPU: EVGA GTX 1080 SC2 iCX   PSU: Corsair RM1000i   CASE: Corsair 750D Obsidian   SSDs: 500GB Samsung 960 Evo + 256GB Samsung 850 Pro   HDDs: Toshiba 3TB + Seagate 1TB   Monitors: Acer Predator XB271HUC 27" 2560x1440 (165Hz G-Sync)  +  LG 29UM57 29" 2560x1080   OS: Windows 10 Pro

Album

Other Systems:

Spoiler

Home HTPC/NAS-

CPU: AMD FX-8320 @ 4.4Ghz  MOBO: Gigabyte 990FXA-UD3   RAM: 16GB dual-channel DDR3-1600  GPU: Gigabyte GTX 760 OC   PSU: Rosewill 750W   CASE: Antec Gaming One   SSD: 120GB PNY CS1311   HDDs: WD Red 3TB + WD 320GB   Monitor: Samsung SyncMaster 2693HM 26" 1920x1200 -or- Steam Link to Vizio M43C1 43" 4K TV  OS: Windows 10 Pro

 

Offsite NAS/VM Server-

CPU: 2x Xeon E5645 (12-core)  Model: Dell PowerEdge T610  RAM: 16GB DDR3-1333  PSUs: 2x 570W  SSDs: 8GB Kingston Boot FD + 32GB Sandisk Cache SSD   HDDs: WD Red 4TB + Seagate 2TB + Seagate 320GB   OS: FreeNAS 11+

 

Laptop-

CPU: Intel i7-3520M   Model: Dell Latitude E6530   RAM: 8GB dual-channel DDR3-1600  GPU: Nvidia NVS 5200M   SSD: 240GB TeamGroup L5   HDD: WD Black 320GB   Monitor: Samsung SyncMaster 2693HM 26" 1920x1200   OS: Windows 10 Pro

Having issues with a Corsair AIO? Possible fix here:

Spoiler

Are you getting weird fan behavior, speed fluctuations, and/or other issues with Link?

Are you running AIDA64, HWinfo, CAM, or HWmonitor? (ASUS suite & other monitoring software often have the same issue.)

Corsair Link has problems with some monitoring software so you may have to change some settings to get them to work smoothly.

-For AIDA64: First make sure you have the newest update installed, then, go to Preferences>Stability and make sure the "Corsair Link sensor support" box is checked and make sure the "Asetek LC sensor support" box is UNchecked.

-For HWinfo: manually disable all monitoring of the AIO sensors/components.

-For others: Disable any monitoring of Corsair AIO sensors.

That should fix the fan issue for some Corsair AIOs (H80i GT/v2, H110i GTX/H115i, H100i GTX and others made by Asetek). The problem is bad coding in Link that fights for AIO control with other programs. You can test if this worked by setting the fan speed in Link to 100%, if it doesn't fluctuate you are set and can change the curve to whatever. If that doesn't work or you're still having other issues then you probably still have a monitoring software interfering with the AIO/Link communications, find what it is and disable it.

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