A new processor was recently installed on a one year old motherboard, replacing the original processor. The processor is on the motherboard’s supported processor list and was double checked for proper installation. However, the PC refuses to POST properly and displays no video onscreen. Which of the following is the MOST likely issue?（）

• A、Too much thermal paste was used on the processor and it is preventing boot.
• B、The motherboard needs to have its PWD jumper removed before the first boot.
• C、The motherboard needs to have the most recent BIOS version installed.
• D、The motherboard needs to have a newer CMOS chip installed.