NEW YORK — Stronger profits from Microsoft, McDonald’s and other major U.S. corporations are helping stocks finish higher. The Dow Jones industrial average and the Standard & Poor’s 500 index had a winning week for the first time this month.

The Dow rose 65 points to close at 13,029 on Friday. The S&P 500 added a point and a half to 1,379.

Microsoft rose 4.5 percent after beating analysts’ projections for quarterly earnings and revenue.

In other trading, Apple sank 2.5 percent. That helped tug the Nasdaq composite index down seven points to 3,000. Apple, the most valuable company in the world, accounts for 12 percent of the Nasdaq.

DALLAS — US Airways has struck deals with unions at American Airlines to win their support for a possible merger of the two airlines, both of which serve Charleston.

The unions are angry that American is trying to cut jobs and labor costs while under bankruptcy protection. They represent 55,000 workers. The unions can’t force a merger on their own, but they can work with other creditors of American parent AMR Corp. to persuade the bankruptcy judge to open the door to a deal.

Doug Parker, CEO of US Airways, said Friday that a merger could save about 6,200 jobs at American. He said he would keep both airlines’ hubs and planes to create a bigger company that could compete against United Airlines and Delta Air Lines.

WASHINGTON — Hundreds of thousands of computers worldwide may have been infected by hackers in an online ad scam and may lose their ability to connect to the Internet on July 9. Here’s how the FBI says you can check your computer:

Go to http://www.dcwg.org and click on “Detect” in the upper left corner, or on the Green Button next to it. You will be directed to a new page. Pick your language from the list and click on the link next to it.

If your computer is not infected, you will see a green logo with the message: “DNS Resolution=Green. Your computer appears to be looking up IP addresses correctly!” If you see that, you don’t need to do anything.

If you see a message with a red logo saying your computer appears to be infected, you will be directed to a new page. You will be directed to websites that will provide antivirus tools that cybersecurity experts have identified as being effective in removing the malware.

WASHINGTON — U.S. investors thought they were buying access to a stock-picking robot named “Marl.” Instead, they paid millions to teenage twin brothers in England who now face civil fraud charges for an alleged penny-stock swindle. The robot didn’t exist.

The stocks picked were companies that paid hefty fees to Alexander and Thomas Hunter, just 16 when the alleged scheme began in 2007, the Securities and Exchange Commission said Friday. As stock prices jumped, the Hunters’ clients dumped their shares. The SEC filed a lawsuit Friday against the Hunters, who are now 20.

NEW YORK — General Electric’s first-quarter net income topped Wall Street expectations on a strong performance from the conglomerate’s industrial businesses.

GE said Friday that net income fell 12 percent to $3.03 billion. Revenue slipped 8 percent to $35.2 billion.

The industrial and financial giant said its primary manufacturing operation has rebounded after posting weak results following the global recession. GE has a stake in almost every sector of the economy.

Wire reports