During nearly all of his reign, the real power behind the throne was his mother, Queen Dowager Tuyên Từ, a royal consort of Lê Thái Tông.
With the sudden death of Lê Thái Tông, his heir was an infant son named Bang Co, mothered by Royal Consort Nguyen Thi Anh.
While some disputes surfaced between the Confucian scholars and the noble families, by and large things were fairly peaceful and prosperous for the country.
Two years later, Trịnh Khả was officially pardoned along with several other close advisors to Le Loi who had been killed (like Lê Sát).
It may have been done to remove the Queen Nguyen Thi Anh from power, but if that was the reason, it failed, the young king's mother still controlled the government up until the 1459 coup.
Good counselors like Trịnh Khả had been removed from office and inept men had been elevated, bringing oppression and calamity to Vietnam.