E-machines M5309 problem powering on
i got a e machines M5309. for no reason now it wont come out of standby. after it goes in i normally press the power button but when i do that screen stays black but i can hear the drives powering up. one day it was wroking fine next day i get this. i have to hold down power button for 5 secs to shut it off then turn it back on. i did not change any of the settings. anyone help with this.