I've assembled the new rig but unfortunately can't even get to POST. Power comes on, all fans go, even CPU fan, but no beep, no video. The monitor works for sure. I've checked and rechecked every plug, the memory, PCI, etc. All snug and correct. Handled CPU installation very carefully, although I am using the stock cooler. Any other suggestions?
make sure you uses the brass standoffs so the mb not shorting out to the case and the 4/8 pin atx power is plugged in. on the gpu if it has two 6 pin or two 8 pin power plugs make sure both are plugged in. there two places a dead short can happen...using an after martket cpu cooloer the black plat if metal can short the back of small mb. or the mb i\o shield fingers are too long and one in the usb/Ethernet port or shorting the mb out. also check that the clear cmos jumper in the right place and that the power/reset/case wires are on the right pins. if not you could have the mb stuck in a hard reset mode.
Doesn't look like there's any kind of internal speaker. Still get nothing from headphones in any of mobo audio jacks. I'll get speakers for future.
Tried clearing cmos with battery.
Still no response from monitor. Hard to diagnose without beeps. Hard to imagine serious psu, cpu, or mobo issue, they all look and smell fine and handled with care. Possible lemons or dead somehow? Possible monitor issue with hdmi? Monitor worked as second screen for laptop.