Microsoft saw its profits rise by 35% in the first three months of 2010 - as its Windows 7 operating system continued to prove popular.
The giant software company made a net profit of $US4 billion and said it had also seen "strong growth" from its Bing search engine business and XBox Live.
Sales hit a record $US14.5 billion, up 6% on the same period a year earlier.
Windows 7 has proved to be Microsoft's best-selling operating system to date.
The BBC reports the company's results are closely tied to computer sales because its two most profitable divisions make the Windows Operating System and Office business software.
And the firm said business customers were "beginning to refresh their desktop".
Yahoo and Apple announced higher profits earlier this week. Google reported strong figures last week.