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* Facebook surges after upbeat 4th-qtr
* Microsoft dips as Azure revenue growth slows
* Details awaited on U.S.-China trade talks
* Dow off 0.44 pct, S&P up 0.37 pct, Nasdaq jumps 0.95 pct (Updates to open)
By Sruthi Shankar
Jan 31 (Reuters) - The S&P 500 and the Nasdaq got a boost from Facebook Inc's stellar earnings on Thursday, while the Dow was weighed down by a bunch of disappointing quarterly results as investors awaited the outcome of the U.S.-China trade talks.
Wall Street surged on Thursday after the U.S. central bank said it would be patient in raising rates further this year, reassuring investors concerned about tighter financial conditions crimping economic growth.
The Fed's dovish tone, along with heartening results from tech companies including Apple Inc and Facebook set the main U.S. indexes on track for their best month in about three years.
Facebook jumped 13 percent after its quarterly profit topped analysts' estimates, showing that digital advertisers were still flocking to spend money on the service even after a series of high profile embarrassments.
The communications services sector gained 3.45 percent, while other FAANG members — Amazon.com Inc, Apple, Netflix Inc and Alphabet Inc — gained between 0.6 percent and 1.8 percent.
General Electric Co soared 17 percent after the industrial conglomerate beat estimates for sales and cash flow in the fourth quarter.
"Right now we have positive earnings, positive economy and a positive Fed, but the only missing piece of the puzzle is trade," said Andre Bakhos, managing director at New Vines Capital LLC in Bernardsville, New Jersey.
"It seems as if most of the fears have been taken away except for trade, which is holding back markets. It's still a wait-and-see approach."
U.S. President Donald Trump expressed optimism about high-level trade talks with Chinese officials in Washington but said no final deal would be made until he meets with Chinese President Xi Jinping in the near future.
The two countries opened a pivotal round of talks on Wednesday aimed at bridging deep differences over China's intellectual property and technology transfer practices and easing a months-long tariff war.
Fourth-quarter earnings reports have largely exceeded market expectations so far, helping U.S. stocks recover from a December selloff that was fueled by concerns about trade disputes, rising interest rates and fears of diminishing corporate profits.
At 10:17 a.m. ET the Dow Jones Industrial Average was down 109.08 points, or 0.44 percent, at 24,905.78, the S&P 500 was up 9.92 points, or 0.37 percent, at 2,690.97 and the Nasdaq Composite was up 67.90 points, or 0.95 percent, at 7,250.98.
DowDuPont Inc fell 7.7 percent, leading decliners on the blue-chip Dow, after the chemical maker's revenue fell short of expectations. The S&P materials sector dropped 2.12 percent.
Microsoft Corp declined 2.6 percent as its Azure cloud computing sales grew at a slower pace than a year earlier, although its quarterly results and forecast topped Wall Street estimates.
Intel Corp slipped 2 percent after the chipmaker named interim Chief Executive Officer Robert Swan to the role on a permanent basis.
Advancing issues outnumbered decliners for a 2.08-to-1 ratio on the NYSE and a 1.75-to-1 ratio on the Nasdaq.
The S&P index recorded nine new 52-week highs and no new lows, while the Nasdaq recorded 26 new highs and 12 new lows. (Reporting by Sruthi Shankar and Shreyashi Sanyal in Bengaluru; Editing by Shounak Dasgupta)