1 of 2 cores disabled on high load

[Phong_Nguyen]

When I play some games that require high CPU loads, I noticed that there are some severe lags when I play the game for about 5-10 mins. I checked task manager and it said that CPU 0 and 1 is active and CPU 2 and 3 is parked, which means 50% of the CPU power is not utilized. I searched the web for some guides that help me disable the core parking (C6 state), that does help me unpark all cores on normal use, but when I use CPU demanding programs, it keeps locking my cores after a short time. Here are some screenshots of the stress test I've done on the CPU:

This is the screenshot taken before the test. Everything looks fine, the CPU is unparked, temp looks fine.

Then when the stress test ran for about 3 mins, CPU 0 and 1 stopped as you can see in the task manager and the temp manager.

After that I stopped the test and wait about 30 secs then CPU 0 and 1 started working again.
I've not reached the TDP limit and the temp limit, my CPU doesn't support turbo boost. Please help.

[Phong_Nguyen]

Edit: I've reinstalled Windows from scratch, the issue still persists. I guess it's because of a CPU failure or maybe a driver issue.

[Kumar0307]

Hi @Phong_Nguyen

Welcome to the HP Support Community. I understand you are facing slow performance issues while gaming. I'd be happy to assist you.

This model PC is not designed for high-end gaming. HP does not recommend using 3rd party tools to run a stress test on the device, as it may not be accurate.

Install updates using HP Support Assistant

1. In the search box, type and open HP Support Assistant. 
2. Check for updates. 
3. If the updates are available, click on install and restart the computer.  

Note: If you do not have HP Support Assistant installed, Click here to download the same.

To help with underclocking,

Go to, Control Panel > Power Options > Chose What the Power Button Does > at the top, click "Change settings that are currently unavailable", the under Shutdown Settings, uncheck "Turn on fast startup"

Let us also run a hardware test on PC components to check its functionality.

1. Hold the power button for at least five seconds to turn off the computer.
2. Turn on the computer and immediately press Esc repeatedly, about once every second. When the menu appears, press the F2 key.
3. Perform System Test > Extensive test. Share the result on your next post.

Hope this helps! Keep me posted. 

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