hi i have an Aspire V5-121 which will not boot properly. when i turn it on with the power button the lights come on and the fan starts spinning but the screen is black. after about 6 or 7 seconds the fan stops but all the power lights are still on and working but still a black screen?? the laptop has windows 8 installed on it plus I have Ubuntu installed on it as well. The computer was working fine last night but today will not boot at all i do not even see the acer start up picture. i have read about in the tech forums looking for similar acer problems and it does seem to be a known thing with these notebooks a lot say about downloading software from acer and booting it with USB but haven't found such BIOS software that i can boot from a USB. I am quite tech savy so cud prober;y fix with correct instructions. I haven't got a clue on this one. need help badly need to fix this notebook???