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pc will not switch off, and monitor shows no input signal

by Loustry / January 16, 2012 2:10 AM PST

Hp Pavillion media center M8300f desktop w/ vista system. Pc will not turn off, and no signal to monitor. Graphic card is integrated.What is solution. Can another card be used to overcome the problem. Thank you and have a great day.

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by MarkFlax Forum moderator / January 16, 2012 4:26 AM PST

Hi Loustry, can you tell us more?

The PC will not turn off and no signal to the monitor.

If the PC will not turn off does that mean the PC was working properly before you tried to shut down? And did the monitor work correctly?

If so, what happened then. Please step through what you did and what you saw.

How do you know the PC has not turned off if there is no display on the monitor?


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Monitor went dead, and pc would not switch off in normal way
by Loustry / January 16, 2012 9:24 AM PST
In reply to: Confused.

Hi Mark, and thanks for getting back so soon.
Right now, pc starts up soon as power cord is inserted, switch light goes on, but in-operative, and monitor has small dialog box stating,
no input.
input 2:hd15
go to power save.
That is all the info one can state.
Hope this helps. Have a great day. Happy

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This seems to be two different problems
by MarkFlax Forum moderator / January 16, 2012 7:57 PM PST

PC does not turn off, and Monitor does not work.

For the monitor, no input signal means no video is coming from the PC. You might have a faulty cable or poor connection, faulty video card, faulty motherboard or faulty power supply. Try to troubleshoot first the problem:

Check the cable from the PC to the monitor are not loose. Unplug the PC and open it up. Clean out all the dust. Carefully remove and replace all the cables going to the motherboard one at a time. Do the same for the memory dimms and the video and sound cards if you have any. Plug your PC back in and try again.

But if the motherboard has gone then that's it. That needs replacing and it is a "repair job" for an expert PC repair shop. The same with a faulty power supply unit, (PSU). The video card may have failed but that shouldn't prevent the system booting up.

Since the PC doesn't turn off without unplugging the mains power, I suspect the PC is in need of repair.


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by Loustry / January 17, 2012 4:29 AM PST

Thank you Mark for taking the time to help. Me thinks part of the mother board went for a permanent vacation. Sad

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