CPU clock speed and voltage fluctuating constantly

[cowey1]

For the past couple days my CPU, i5 6600k, stopped overclocking and began to fluctuate its values like crazy. The values get so low, 1-2 Ghz, that my computer becomes really slow and sometimes unusable.

Things I have tried:
- Changing Windows power plan to High Performance
- Changing voltage settings in BIOS from auto to a fixed number (I can't, if I assign a specific value the computer doesn't load up and gets stuck in a reboot loop)
- Running a CPU diagnostic check (passed all tests)
- Making sure all fans are working
- Updated BIOS
- Reset CMOS
- Made sure CPU cooler is firmly attatched
- Set specific clock speeds in MSI Command Center (After pressing "Apply" the CPU ignores any values I assign in and continues to fluctuate)

If anyone can offer any advice, it would be much appreciated!

 

[winks42]

Have you tried overclocking it is the bios? You can switch power options there too, adaptive is recommended

 

[cowey1]

Have you tried overclocking it is the bios? You can switch power options there too, adaptive is recommended

Trying to modify the voltage or ratio values in the bios or using one of the preset MSI overclocking settings makes the computer not boot, until it gives me the message to reset the CPU settings in the bios.