My acer Aspire One ZG5 will turn on, like I hit the power button and you can hear everything come on, but there is not display at all. I recently reformatted it from windows 7 to windows 7 because it was having problems, and when i turned it on, it did this problem. Did not even goto Acer BIOS screen upon startup. I am a very experienced PC tech for any kind of laptop/desktop and I still have no clue what this is. I figured there was a bad sector or something in the hard drive, so i dissasembled the laptop, plugged it into my desktop via SATA connector, and it did not show up. So I ordered a brand new hard drive for it, made sure it was a correct replacement of course, and decided to buy more RAM while I was at it. Only 1GB because that is the max it can hold. So when I got the parts in, i installed them correctly. Well, still same problem, can't even get up the BIOS screen to boot anything from so I can put an OS on it. I have dissasembled time and time again replacing memory with old, taking all the parts off of it including CPU fan, CMOS battery, everything. And left them out for a while and put them all back together... still same thing. PLEASE HELP IF ANYONE KNOWS WHAT THIS COULD BE!!