Windows 7won't start

[fivestarclean2013]

Turn on,launch Windows repairs starts,loading Windows files which makes a humming noise during the loading,then it says startup repair can't seem to find problem.then I hit finish and,then it shuts down.I had it on this morning,then this happens.my keyboard also don't work.its,a fairly new,computer.please help thanks

 

[Grobe]

A fairly new computer often is within the period of warranty. Just go to the dealer if it's broken.

 

[rgd1101]

MERGED QUESTION
Question from fivestarclean2013 : "Need to have Windows start it wont"

Toshiba laptop satellite l755 Windows fails,to start and keyboard does not work help

Can you give any details on what pops up on-screen when you attempt a boot?