Question: Did it ever work? Is it only recovery from sleep? Will it boot normally if you unplug the computer while it is on (forced crash) and then restart. Will it boot in Safe mode? Getting stuck at the welcome screen indicates a driver not loading properly. Since the display does not work, likely the video drivers. Update with the newest driver from Nvidia for your system. Windows XP has had problems in the past with recovering from power management settings like hibernate and sleep.
https://www.geforce.com/drivers
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