my computer have been working fine for 1 year and it suddenly show that the monitor have no signal when u on the computer it doesn't have the beep sound... but when u off it and on it sometime it work again..

Hi,
I am sorry but you will need to explain yourself more clearly if you want to get assistance. You have a heading "Computer refuses to boot sometimes" then you talk about the monitor showing "No signal" and when you turn it off (Monitor or machine?) and on again it works sometimes? Maybe you can get a friend to help you ask your question.

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