Legal basis: According to Article 47 of the Postal Law of People's Republic of China (PRC), postal enterprises shall compensate for the loss of vouched mail according to the following provisions: (1) If the insured vouched mail is lost or completely damaged, compensation shall be made according to the insured amount; In case of partial damage or shortage of internal parts, the actual loss of the mail shall be compensated according to the ratio of the insured amount to the total value of the mail. Second, there is a contractual relationship between you and the courier company, so naturally you can only ask the courier company for compensation. If negotiation fails, you can sue for compensation. Third, the residual value of the computer needs to be appraised by a qualified appraisal institution. If the appraisal of the so-called insurance company deviates from the facts, you can not recognize it.