I'm using a Compaq laptop & agree with Giok that a laptop can get very hot if it's on for too long.

When it was very new I accidently left it on all day a couple of times cos I hit the start button when I finished, so I lhave learnt to sit it on a heatproof glass tray eveytime I use it cos the base can get very hot.

Late one night recently, (or maybe that was early one morning), it went feral & made strange noises (eek) & started getting very hot (ooops), so I left it in the bath all night as I didn't want to leave it on it's usual wooden shelf!! It didn't; seem to permanetly affect it.

One day soon I will replace it with an iMac as it is rather elderly & I have re-arranged stuff so I can fit in a small computer table.

sandra