Try resetting the password by using LiveCD.

http://faq.uniontech.com/tools/livecd 【LiveCD provided by UnionTech.】

http://bbs.chinauos.com/post/15430  【LIveCD provided by a member.】

http://livecd.uostools.com/                 【LIveCD provided by a third-party site.】

https://mp.weixin.qq.com/s?__biz=Mzg4NTU5NTYxMw==&mid=2247484615&idx=1&sn=7cd66048d2f7344738888291ee307497&chksm=cfa7c875f8d041632f1bcd855b67dd6706fdbbb90ee1eeac0456ce2c3c72a899ce13396206b4&mpshare=1&scene=24&srcid=0413hZlVA8Nz2Du9sBBftt1U&sharer_sharetime=1649853207426&sharer_shareid=c76ef25dd92b9512f9e4214d68cb0911#rd

按照这个搞一下。