The company paid Globalfoundries to buy its unprofitable chip-manufacturing unit, and reported poor quarterly figures.
The merger talks between the two companies have been formally terminated.
Hewlett-Packard is splitting the company into two separately listed units, with annual revenue of just under $56 billion each.
The company skips a number as it announces Windows 10, due to ship by the end of 2015.
The company invests $1.5 billion in a 20% stake in two Chinese semiconductor companies.
The company's shares have risen more than 35% over its offer price, making it one of the largest IPOs.
The company abandons its contentious image tool following a copyright lawsuit by Getty Images.
Thomas Bravo, a private equity investment firm, bought Compuware for $2.5 billion.
The live video start-up was acquired for $970 million.
The ex-CEO resigns from the Microsoft board to spend more time on his newly-acquired Los Angeles Clippers basketball team.
Google and five Asian comms companies have agreed to invest $300?million in a new undersea trans-Pacific cable.