An independent computer service company tallied the service requests it receives for individual brands of personal computers  It found that, after factoring in each brand' s market share, KRV brand computers had the largest proportion of service requests, whereas ProBit brand computers had the smallest proportion of service requests
Obviously, ProBit is the more reliable personal computer brand
For some computer brands, but not for others, most service requests are made to the manufacturer's service department rather than to an independent service company.