More than 100 NYCHA tenants crowded into a Manhattan courtroom Wednesday to describe their horrible living conditions — but the story that moved the judge most was of a mother still haunted by her son’s murder at a New York City Housing Authority building where surveillance cameras weren’t working.

Manhattan federal Judge William Pauley demanded immediate action in the case of Brooklyn mom Dionne Boyd, 51, who, despite repeated requests for a simple housing transfer, still has to live in the complex where her 16-year-old son was slain last year.

“As a matter of basic human decency, ­NYCHA should find that woman an apartment someplace else forthwith,” Pauley said.

“To go back to her home every day and confront the same hall or lobby where she lost her son, there is no ­excuse for that.”

“Whether I have the authority to order it or not, I am going to order it,” he said.

The judge grew so frustrated by NYCHA during the daylong hearing, he raised the possibility of just turning over the whole operation to the feds through a receivership.

Among the issues that upset him was ­NYCHA’s July appointment of Vilma Huertas as new chief compliance officer, despite her role as a longstanding insider in the failing city agency.

“The interim chair appoints an insider as the chief compliance officer? Isn’t it really kind of ridiculous?” Pauley demanded to know as NYCHA boss Stanley Breze­noff, 80, looked on from the gallery.

Pauley invited the tenants to his courtroom because he is responsible for determining whether to approve the feds’ deal to clean up NYCHA, including a court-appointed monitor and a fresh $2.2 billion investment from the city.

Dozens of tenants spoke, spending hours telling stories of chronic asthma brought on by mold, a lack of heat and hot water — and surly NYCHA staffers who allegedly have lied about repairs and threatened complainers with eviction.

Attendees saved their biggest cheers for Carmen Quinones of Manhattan’s Frederick Douglass Houses, who demanded that NYCHA management be probed for criminal wrongdoing, which the feds are doing.

“They need to be investigated. They need to go to jail,” Quinones told the judge to loud and boisterous applause.

“Lock them up!” someone shouted from the gallery.