i tryed all exept the last two ones (im not that confident in my skills)Hello,
Perform the following steps:
-Remove the battery and Power adapter
-Press and hold the power button for 30-45 seconds (with battery and power still removed)
-Insert just the battery and attempt to boot the laptop.
-Insert just the power adapter and attempt to boot the laptop.
If still unsuccessful: Remember to remove battery and power before removing/installing components
-Remove the power and battery
-Remove the hard drive from the laptop and attempt to boot with the battery installed. Do you receive any error message?
-Remove the memory modules from the laptop
-Insert just the battery and attempt to start the laptop (you should receive beep error)
-Try inserting just one module of memory and test (swapping modules after each attempt)
-Remove the optical drive and test.
-Try disconnecting the CMOS battery for a few minutes then re-connect and try.
How to take apart a Toshiba Satellite P305 series notebook