Why are so many new motherboard faulty from new.

There could be several reasons why some new motherboards may be faulty upon purchase. Here are a few possibilities:

1. Manufacturing defects: Despite quality control measures, there is always a chance of some defective units slipping through the manufacturing process. Complex electronic components like motherboards are subject to a range of potential issues during production, such as faulty soldering, damaged components, or improper assembly.

2. Transportation and handling: During shipping and handling, motherboards can be subjected to rough treatment or physical stress, which may result in damage to delicate components or connectors. Even a small amount of force or impact can cause issues that might not be immediately apparent.

3. Compatibility issues: Motherboards need to be compatible with various other hardware components, such as processors, RAM modules, and graphics cards. In some cases, a compatibility issue between the motherboard and other components could lead to system instability or failure.

4. Power-related problems: Power supply issues can affect motherboard functionality. Inadequate power delivery, voltage fluctuations, or inconsistent power can cause a motherboard to malfunction or fail to power on.

5. User error: Sometimes, faulty operation during installation or configuration can lead to apparent motherboard issues. Mishandling components, improper installation of CPU, RAM, or expansion cards, or incorrect BIOS settings can result in a non-functional system.

It's worth noting that while it may seem like there are many faulty motherboards, it could be a perception bias caused by the vocal minority of people who encounter issues. Most motherboard manufacturers have rigorous quality control processes in place to minimize the occurrence of defects. Nonetheless, if you experience a faulty motherboard, it's advisable to contact the manufacturer's customer support or return it to the retailer for a replacement or refund.