A 135 will not start at all, no lights are on

I may have overheated my laptop.  I added more memory a few weeks ago but I don't think that is why it stopped working.
Please help me,
Ryan

please furnsih entire model# to better assist.  If you added more memory did you ensure compatability first?  Were they seated properly-hear the clicks? Not all memory is created equal.  Kingston has a designed  a web core to ensure exact match for memory for Toshiba models.  Did you hear beeps when you powered the unit on?  Check power supply, remove battery, check memory access area, check fan and exhaust port to be free of debris.  It is possible that the shutdown is due to memory incompatibility as a precaution but you would have heard a beep sound off. Can you hit F2 upon boot up? If not, by doing above suggestions-trip to Authorized Service provider is in order.  How about trying to put original memory in, no battery.

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