Blackstone has revoked its $25bn (£16bn) buyout bid for Dell.
According to a Financial Times report, Blackstone was concerned about the company’s finances as well as the declining home computer market.
However, the company said it continued to view Dell as "a leading global company with strong market positions".
The pull-out has left investor Carl Icahn and a consortium led by founder Michael Dell as the leaders in the bidding race.
Dell, joined by private-equity firm Silver Lake Partners, has proposed a $24.4bn buyout of the company.