(Bloomberg) -- They were all stars of the dot-com era before fading into the background as the bubble burst and a new generation of tech darlings rose to the forefront. But Dell Technologies Inc., Nokia Oyj and Lenovo Group Ltd. are back with a vengeance thanks to the unrelenting artificial intelligence spending boom.Most Read from BloombergStrait of Hormuz Ship Transits Are Rising Thanks to US HelpAmericans Injured in Iranian Missile Strike on Kuwaiti Air BaseCVS Returns Zepbound to Drug Plans