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I removed all the cards and cables. &nbsp;There is no beep. &nbsp;What does it means?
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I removed all the cards and cables.  There is no beep.  What does it means?

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yes how do you knwo taht the pc is comming on what indications are there
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yes how do you knwo taht the pc is comming on what indications are there

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The computer power light is on, IanTH, thx^^
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The computer power light is on, IanTH, thx^^

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Thx all experts. &nbsp;I'm going to check if it is the power supply problem (check the fan) next Monday when I back to work, hehe.
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Thx all experts.  I'm going to check if it is the power supply problem (check the fan) next Monday when I back to work, hehe.

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I checked my computer by plugging in different monitors. &nbsp;All the monitors show the same symptom. &nbsp;They don't show up anything. &nbsp;Just like I didn't turn on the computer at all. &nbsp;But actually, I turned on. &nbsp;<br />
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I also plug in different display cards, they are working in other computers. &nbsp;So, what is the problem?<br />
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Is it the motherboard's problem? &nbsp;What else can I check?<br />
<br />
Thanks for all replies.
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I checked my computer by plugging in different monitors.  All the monitors show the same symptom.  They don't show up anything.  Just like I didn't turn on the computer at all.  But actually, I turned on.  

I also plug in different display cards, they are working in other computers.  So, what is the problem?

Is it the motherboard's problem?  What else can I check?

Thanks for all replies.

No display in the Monitor

Hardware includes cell phones and other digital living devices, tablets, computers, servers, peripherals and components, printers and scanners, gaming consoles, networking hardware such as routers, hubs, switches and modems, storage devices and security equipment such as firewalls and other appliances.

Hardware

A monitor or a display is an electronic visual display for computers, usually comprised of the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) thin panel, while older monitors used a cathode ray tube (CRT) about as deep as the screen size. They are connected to the computer via VGA, DVI, DisplayPort, Thunderbolt, LVDS or other proprietary connectors and signals.

Displays / Monitors

Components are those devices that are internal to a computer -- the PC boards, the central processor (CPU), the memory (RAM), disk and video controllers and so on.