G751JY i7 4710HQ only using two cores? [solved]

[bravo17]

I have started to notice slow CPU performance lately, and it seems I have only two cores available, while the i7 4710HQ in my laptop should have 4. CPU-Z reports 2 cores and 4 threads. Other testing software gives me results on only two cores. Any suggestions?

[Miguel552]

Have you tried checking on the UEFI to see if they're all activated?

[unclewebb]

This is almost always caused by a setting in Windows.

msconfig - Boot tab - Advanced Options...

Make sure Number of processors is NOT checked. Click on OK and reboot so Windows can find all 4 cores of your CPU.



If someone set that to 4, that is 4 virtual cores (threads), not 4 real cores so you end up with 2 cores / 4 threads.

[bravo17]

I found the problem just after posting this, and the solution was what "unclewebb" said. Anyways, thanks for your replies. Happy 4 core user now :)!