I have just bought a new cpu, motherboard and ram to replace my old parts. When I test benched them nothing is turning on, no cpu fan spin, no psu fan spin. Tried it again with the old parts, fans started spinning. On the new components, I took out the CPU and tried powering it up then. Still nothing happened. If the CPU is faulty shouldn't you still get at least one fan spinning? cpu fan or psu fan. Thank you in advance for your feedback.