My problem has been resolved.  I am now able to see all of the processors ID. [IMAGE] Solution:  Re-install Windows 10 from fresh. Thanks everyone for providing all the suggestions.
Hi everyone,   I have noticed lately with my XPS 8700 desktop.  When I go to Device Manager --> Processors section, I noticed all of the logical processor cores are displaying "Unknown device".   I don't know when this issue happen exactly but only noticed that yesterday.  My XPS 8700 system has BIOS version A14 install (downloaded from the Dell site).  Also,  when I go to the BIOS setting during system reboot (F12),  the processor type is "blank". Does anyone know how I can get the CPU info back ?   I was searching around Google,  it looks like this issue is related to BIOS update as well as Chipset update.  I updated both from the Dell website for my XPS 8700 system.  No help. Still have the same issue. [IMAGE] It will be greatly appreciated it if you can offer a solution to fix this issue.  Thanks.
XPS 8700 known device under processors in Device Manager