Wol or wake on land on Dell inspiring 1545 not working in bios

Hello all. Weird problem and had a search but noone else seems to have experienced it.

I have a Dell inspiring 1545 laptop. I. The bios there is a setting for wol and it expressly states that it can be used to turn the laptop from a powered down state. I have enabled it but it doesn't work when the laptop is shut down. Now it does work when the laptop is in sleep mode but... The setting in the bios seems to make no difference to this. Wake from sleep works regardless of whether the bios setting is on or off. So... I have also...

Checked in the bios to make sure there are no deep sleep settings that need disabling.

Updated bios from a13 to a14. Tried downgrading as well but the Dell utility wouldn't let me.

Tried different Ethernet drivers and checked all Ethernet options including the power settings and enabling the device to bring the computer out of standby and the advanced section where there is a enable wake from off option.

Any ideas????

Thank you