The shutdown is out of the way. The Federal Reserve doesn't meet for another month. Now it might all come down to Nvidia next week. Again. The artificial intelligence chipmaker's latest earnings results, set for next Wednesday after the close, couldn't come at a more delicate moment for the stock market, which has been weighed down this month by signs of weakness in tech land. In midday trading Friday, the Dow Jones Industrial Average was headed for a 0.6% gain on the week, the S & P 500 was ahead 0.3% since last week's close and the Nasdaq Composite had recovered to see just a 0.2% weekly loss. But for the month, the S & P 500 and Nasdaq Composite, which both tilt toward growth names, have lost 1.5% and 3.6%, respectively, through the Thursday close. The Dow Industrials, with fewer tech s

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