I have a sony vaio VPCEE2E1E, i've had it about 18 months and when I leave it in sleep mode it can take 2-3 days to come back on. You can hear it working but there is nothing on the screen. Also when if I switch it off properley using shut down sometimes it won't come back on either. I have replaced the battery, power lead and I have restored to factory settings however this hasn' made any difference. Any help would be appreciated. Thank you.