My laptop(Toshiba Satellite A105 - S2051) wont turn on with or without battery on a/c adapter. Adapter seems to have a charge but when i plug it in and try hitting the power button nothing happens. I do however hear a ticking sound coming from around the area of the exhaust fan. Please help

Hi, this is tricky, as the machine does seem to freeze even before booting. the fan may have become stuck, use some compressed air with the fan inlet (bicycle pump may do) to clean out some dust.

wait some time and switch on again.
observe if the green lamps for harddrive and cd-drive light up.
if no, the computer does not boot up, it may be then that :

the fan is broke and laptop prevents overheat damage by not booting up(buy a new fan and replace it)

or the machine itself is broke
in either way, if the solution i provided did not help, i would recommend to see a technician!

good luck then