RE: P2715Q monitor, won't wake from sleep from power saving
Dell does not have a process to pick up this P2715Q, flash it, and then return it to you. Nor could we allow you to flash it. Firmware updates are only done in our Service Centers on returned product. The only way to get a P2715Q with the latest firmware is via a used/refurbished exchange.
Social Media Support
Run the PC pre-Windows diagnostics
Run the Monitor Reset & BID (Built-in Diagnostics)
Out of Warranty Support