+Here is a trick you might try that sometimes works: Remove the power adapter and remove the battery. Hold down the power button for 15 seconds. Put the battery back in and reinsert the AC power and then try to turn it on. That’s worked in the past with some of the older model Toshiba units. Hopefully, it will work for you as well.
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Try This :- Take the battery out (and leave it out) - press and hold the ’start key’ for 10seconds - release - and hold down another 15seconds - when the LT starts put the battery back in.
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since no one pointed this out, there is a small possibility that your toshiba’s bios went corrupt . or…
1. the "power had come out"? if this meant it shut down, then mabye its not charged fully
2. could the connector between the screen and your graphics card be broken? that would not explain the sound though
if its your bios thats BAD execpt in some cases where you can reprogram it.
if its your power, you could probably just recharge it.
if its your display wire try to get it repaired
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