When the Multi-Core CPU is installed on the accelerated route, it is only shown as a single core in the system.
1, if the CPU is indeed multi-core, motherboard support is not a problem, you may have a relationship with the BIOS settings, set the method as follows: Post, press the Del into the BIOS settings (depending on the hardware, may also be other keys, such as F2, etc.) into the Advanced-"CPU Configuration" ( Advanced-"CPU configuration")
2, in the following options, find cores Enabled (the number of CPU cores opened), set to 0
3, 0 means to open all cores, if set to 1 means only 1 cores are enabled, 2 represents dual core ... Analogy
4, find X2apic (X2APCI support), set to Disabled (disabled)
5, after the completion of the modification, save the BIOS settings (F12 or other keys) exit, the machine can be restarted