Having problems with your Dell Inspiron 6400 Notebook ?

System stops working. Task manager show nothing working and then a loud speaker beeep continuously

Answers :

Is there a sequence to the beeps? If there is then it is telling you the problem with the beeps. For example "beep" "beep" "beep-beep" would be a processor register failure. Also check that the cpu fan is working...it might be overheating if the fan has stopped.
Repair Help & Product Troubleshooting for Dell Inspiron 6400 Notebook

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System stops working. Task manager show nothing working and then a loud speaker beeep continuously

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