Even if your fan is moving, your power supply might not be outputting the correct power levels. To be certain it is working as intended, test it using the next method.
+3. 3 VDC (within +/- 5%) +5 VDC (within +/- 5%) +12 VDC (within +/- 5%) -12 VDC (within +/- 10%)
Additionally, avoid static electricity as much as possible! Ideally, use a surface like wood or glass, and do not stand on carpet.
If you are using multiple sticks of RAM but are not filling all your computer’s available slots, refer to your manual for optimal placement.
If you are hearing a series of beeps, that is a beep code that represents a specific error. Your computer performs a POST each time you turn it on, so if your motherboard is already installed, turn the computer on. If it boots properly and there is no beep code, but you believe something is wrong with your motherboard, consider consulting a professional. Often, the easiest way to determine you have a bad motherboard is checking every other component in your computer. After a failed POST, ensure all other components are working before assuming your motherboard is nonfunctional.