Right, because prior to solid caps, nothing lasted more than one or two years. All those circuit boards made 10+ years ago with electrolytic caps that still work fine are just a figment of your imagination!
Premature failure or accelerated aging in any capacitor results from manufacturing defect, use of inferior materials or compositions, or inappropriate application (e.g. using a capacitor with too low of a temperature rating). There is nothing about solid caps that make them any more immune to manufacturing defects, use of inferior materials or compositions, inappropriate application, or funny business such as inflating the characteristics of inferior caps.
Good electrolytic caps that are appropriate for the application should last at least the five to six years that most motherboards will be in service. However, solid caps are increasingly justified around areas like the CPU for three reasons:
- substantially better ESR performance at higher temperatures (e.g. above 70'C)
- lower impedance at higher frequencies
- more reliable derating assumptions at higher temperatures
Its not that electrolytic caps cannot be used in areas where temperatures are likely to go above 70'C. Its that the accuracy or error margin for derating assumptions and design lifespan become very fickle at higher temperatures (not because they don't last as long, per se).
Solid caps do offer advantages for use in low voltage, high frequency circuits with fast current swings (e.g. modern CPUs and GPUs). But electrolytic caps can do the job as well, it just requires a little more design attention and validation. On the other hand, not using bulk electrolytic capacitance around the CPU comes with its own trade-offs that require just as much design attention and validation, if not more (e.g. active voltage positioning).
Does your Biostar use solid caps around the CPU and major sources of dissipated heat? If so, there is no good argument for using solid caps anywhere else. Certainly not any reason to return a motherboard at risk of restocking fee.
Edit: removed unwarranted jab at Halcyon, after thinking better of it.