Booting Up after long session

  Citreon 10:45 17 Nov 06

After a long session on my computer and after I have closed it down i cannot boot it it up again for at least half an hour.
The green power light comes on but the rad activity light does not. I then have to hold down the start button for several seconds to turn the power off. Can you help please

  rawprawn 11:13 17 Nov 06

Sounds like a heat problem, have you ried giving it a good clean out.

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