My Acer KAV60 laptop won't turn on. When I push the power botton, it blinks green once then nothing.

Take it to a best buy or staples, ask them to hook the laptop up to a universal power supply to see if that is your problem.

if so... then you can buy a replacement power supply while you are there

Remove the main battery and power up, if no change sub out the ram memory one at a time, still nothing it is time to have the motherboard checked.

I'm not understanding what it is you are trying to say,it sounds like you are trying to describe two problems.

Projector won't flash? Are you saying nothing displays on the Screen?

And what just shows blue blink on it's power button the computer?

Blinks and Beeps tell the technician what is wrong with your system. Notice how many times it blinks and where the blinks are long or short. There is a pattern to to blinks for example (3 short blinks or 1 long blink followed by 2 short blinks).

I'm going to assume your system has a memory chip problem and when you press the power button it just blinks and nothing ever happens, not posting on the lcd screen at all.

Remove the Power Cord, Remove the Battery, Turn the laptop over and Remove the screw that secures the Memory Cover and remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.

try removing the battery and see if it runs on mains power, if so you need a new battery. another possibility is that the system has overheated, although you would normally expect it to start up once it has cooled down, unless it has done irrepairable damage!

If the toothbrush was dry. Your Keyboard may be damaged and would need to be replaced. Get model info and find one on EBay for $25.00.

http://cgi.ebay.com/New-Keyboard-4-Acer-Aspire-One-A110-A150-ZG5-D150-D250-/180558024337?pt=PCA_Mice_Trackballs&hash=item2a0a18ce91

http://cgi.ebay.com/New-Acer-Aspire-One-Black-Keyboard-KAV10-KAV60-Series-/320734137941?pt=PCA_Mice_Trackballs&hash=item4aad3e8e55

I do not know your spefcific info but here are two randomlocations.

it sounds like it can probably be an issue with the Motherboard or the RAM.

Is the blinking light an amber or green color? If amber, then it might be a RAM issue. If green, the power would be on, but the monitor might not be active/working.

Try to turn on with only AC power by removing the Laptop battery.

Probably a Motherboard or a Monitor problem. If it's still in it's warranty, you might consider taking it in for repairs.

Make sure that the power adapter is not defective. I recommend that you refer to the following article for tips on how to diagnose power adapter problems & fix them:
http://www.fixya.com/support/r6395191-troubleshooting_laptop_power_failures_ac

it's fell asleep,switch it then the minute you've hit the power button start tapping the F2 key unit you get into the bios settings.
in there you will see a set of tabs across the top the last one being "EXIT" useing the arrow keys go to exit
hit ENTER then move down to GET DEFAULT VALUES/SETTINGS or LOAD DEFAULT VALUES/SETTINGS
Which ever & hit ENTER select yes then hit Enter again then move back up to exit saving changes or
save & exit the computer will shut down & reboot.
if not download & check the manual : click here