When I went to take a nap yesterday my computer went to sleep. When I woke up I tried getting it out of sleep mode by pressing a button. It didn't work so I force closed it via power button. When I tried turning it back on, nothing happened. Nothing turned on and the fans didn't work. Please
Check the reading of the power button LED, is it Steady White, Steady Amber, Blinking Amber, or off?
Are there any 'Beep's, or error messages?
The Studio 560/570 Setup Guide and Troubleshooter is Here:
As there are no signs of life, the Inspiron 570 requires a 'known' working power supply to test the system, I suggest that replacing the PSU, to see if this makes a difference.
The Inspiron 570 Mini Tower can use most standard generic ATX power supply units, with either a 24-pin or 20+4-pin main motherboard power connector, with or without the on/off switch.
You should be able to buy a compatible power supply from either a local or online computer store.
Note: You require a power supply with four SATA power connectors.