Troubleshooting: No Beep No Video

CAUTION:

Be sure and always ground yourself by touching the power supply before handling the motherboard or other components to avoid electrostatic discharge (static electricity, it can damage components). It should be plugged into a properly grounded outlet. I prefer a power strip, so it's always plugged in and still grounded even when the strip is turned off.

The tools needed:

Non-conductive surface, such as a linoleum tabletop, cardboard or rubber mat.
Small screwdriver.
Known good power supply.
Power strip. (not mandatory but helpful if your power supply does not have a primary power switch on back.)

Components needed:

Motherboard
CPU/fan/heatsink - double check to be SURE the fan is plugged in. 30 seconds without it and the CPU is fried.
Video card - or onboard, depending on motherboard.
RAM - I prefer one RAM stick to reduce the number of components that can cause trouble.
Monitor - Can't see any results without it.
Keyboard - Not mandatory but very useful if you need to change BIOS settings.
Speaker - Again not mandatory, but it's helpful to hear a beep code.
Power Supply - Can't get anywhere without it. Use one you already know is good.

If you don't know what any of these components are, the Component ID thread might help.

For Procedure (Click Here)