Just yesterday it stopped running the Firefox internet browser and I ' ve had to go back to Internet Explorer . In fact , this is the second time I ' m typing this Live Journal entry now , because during the first time my laptop switched itself off for absolutely no reason . It 's been doing that every so often for the last couple of months .

Give answer the following question using evidence from the above passage: Why did the laptop switch itself off for absolutely no reason ?
None of the above choices .