The slim Insignia Wi-Fi Windows 8 Tablet released in January 11, 2015, runs on Windows 8 and has an Intel Atom processor. This Insignia Windows 8 tablet offers all the capabilities of many other tablets, but more with the Micro SD and other adapters.
Check to make sure that the tablet has sufficient charge. If it does not, plug it into a power source to charge the device. If the device will still not turn on, you may need to replace the power button. Follow the power button replacement guide on the troubleshooting page.