Go to the Product Support Link at the top of this page and enter in your model information. You'll need to know the rest of your Model Number though which is L355-S78312
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If you don't bother to post your COMPLETE model number it's very difficult to assist you. Please post in complete sentences with punctuation, capitals, and correct spelling. Toshiba does NOT provide any direct support in these forums. All support is User to User in their spare time.
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