HP Inc, which houses former Hewlett-Packard's legacy printer and PC business, forecast adjusted profit for the first quarter below market expectations as it struggles with weak sales of PCs and printers.
However, Hewlett Packard Enterprise, which is headed by Meg Whitman and holds the corporate hardware and services businesses, maintained its adjusted profit forecast for the year.
"Looking ahead, we expect the PC market to remain challenged for more quarters to come," HP Inc's chief executive Dion Weisler said on a conference call with analysts.
Personal computer sales have been falling sharply worldwide and the recent launch of Windows 10 has so far failed to reboot the industry.
Revenue in HP's personal computer and printer businesses fell about 14% in the fourth quarter to the end of October, pushing Hewlett-Packard Co's overall revenue down for the fifth quarter in a row.
The results are the last for Hewlett-Packard, the tech pioneer that split into two separate companies this month, before HP Inc and Hewlett Packard Enterprise start to report separately.
The 76-year-old company has struggled in recent years to keep up with newer technologies and trends, such as the shift by consumers to smartphones and tablets and by businesses to the Internet to store and manage large amounts of data.
HP Inc forecast adjusted profit of 33-38 cents per share for the quarter ending January, missing analysts' average estimate of 42 cents, according to Thomson Reuters I/B/E/S.
The company also cut its 2016 adjusted profit forecast to $1.59-$1.69 per share from $1.67-$1.77 per share.
Hewlett-Packard Co's revenue from enterprise services division fell 9%, while revenue from its enterprise group rose 2%.
Overall, revenue at Hewlett-Packard Co fell 9.5% to $25.71 billion. Net income fell to $1.32 billion from $1.33 billion a year earlier.
