My acer 5735 won't hold a charge. Seems to charge (green light)

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

Unfortunately, if the light is on, but the computer won't power on, it means one of two things. Either the power cord is broken in some way and no long sufficient to power the computer, OR the motherboard is dead. You can try to purchase a universal cable from Best Buy for instance, and then return it if it doesn't solve your problem. A motherboard repair would be best done through Acer themselves, although, it can cost over $300.

When a computer does not boot up, but the battery is charging, it could be a CPU or RAM problem.
Re-seat the RAM modules, this will make sure it makes proper connection to the motherboard.
Next try removing the battery and power up the laptop with just the power adapter connected. If it boots up then insert the battery while it is powered up.

get orignal charger for acer aspire 5735 pc and then try again

Your power connector maybe broken, or your AC adaptor may not function correctly. In both situations is better to go to a service

The linkk below is for the maintenance and service manual for the Aspire 5735.

http://tim.id.au/laptops/acer/aspire%205735%205735z%205335.pdf

Jo
You can try reseating the LCD cable but the issue is most likely a LCD failure (Replacement of the LCD required)