1) first check for virus
2) if there is no virus then it is overheating.it can be possible that fan is not

working properly.
3) it may be caused by the problem of hardware in which a software is corrupted.
4)it may be problem of power .either with your main power line may have loose

connection.

5. You have bad or undervolted RAM
6. You lost a fight with a police dog and have difficulty doing the internet.

That is awesome. Better than the last one i heard.

(Really Old Lady on K6-2/98 SE) "I think my internet is wearing out, will you be a dear can you come install a new one"