There is no easy fix for Silicon Valley's culture of sexism, Roger McNamee, managing director at Elevation Partners, said Monday on CNBC. The comments come after yet another venture capitalist has been accused of sexual harassment.

"Silicon Valley has a cultural problem right now that is so severe that it almost needs a reset," McNamee said on "Squawk Alley."

"I think it's worse today than it was 10 years ago. There are a lot more women in the workforce. And the men are behaving horribly. I just think there has not been good governance inside the companies," he said.

The tech industry is under increasing pressure to change after allegations of sexist behavior have come to light — starting earlier this year with former Uber engineer Susan Fowler's allegations that the company failed to act on sexual harassment and gender discrimination complaints. "It's not like we didn't know this stuff was going on at Uber from the beginning," said McNamee.