Hi Vera and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, does it appear to be completely / electrically dead?
Or is there an indication of power and only that it would not boot? ...or display anything?
Is there a beep when attempting to turn on?
I understand Vera and appreciate the post back.
Based on these descriptions and symptom, foremost recommended action would be to change the battery.
This would however be an internal hardware issue.
Would you be comfortable working on the insides of the Acer Iconia W3-810 ?
Sorry Vera but my participation is strictly limited to technical, repair and/or installation issues.
On the "...do not put the charge through until tomorrow..." and other billing & payment concerns, contact Customer Service to have this taken cared of prior to any / all other interactions.
Still, perhaps the video HERE may shed insight.
Glad that the above information may serve your purpose and would appreciate a Positive Rating and/or an Accept (if haven't done so).
Good luck and thank you too for the opportunity to be able to share the information.