Question about Lenovo ThinkCenter M52 PC Desktop

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My monitor keeps flashing on and off every few seconds I connect my computer to a external screen and it keeps flashing on and off.

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Power consumes more that's why is on and off

Posted on Mar 10, 2009

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My sony viao vgc-va10g has power but screen wnt turn on .


Shine a flashlight on the dark screen to see if you barely see the icons on the desktop. If so, then the LCD Inverter is bad.

Plug in an external monitor and see if the display shows up on it. It can be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If so that proves your video card is ok. The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

If you see no icons by shinning a flash light and the external monitor works, then your screen is bad. If you see no icons by shinning the flash light and nothing shows on the external monitor, then most likely your video card is bad.

Apr 24, 2012 | Sony PC Desktops

1 Answer

My laptop monitor has vertical lines all across it, so I have an external monitor, how do i connect it to the laptop


Connect the VGA cable to the VGA port of the laptop then restart the computer.
Go to display properties and enable the second screen, then disable the notebook screen to display only on the external screen.

Nov 18, 2010 | PC Desktops

2 Answers

Monitor keep going into "sleep" mode


Check the power setting in control panel of windows. If you have a monitor from another computer swap them and see if the problem stays with the computer or monitor.

May 12, 2009 | Dell Dimension 3100 PC Desktop

1 Answer

Monitor shows nothing on screen, power button on solid, none of other buttons respond.


plz try by removing the connector of the monitor from the back of cpu while keeping your monitor power on. if you get any message in the monitor then your monitor is ok. then open your side cover and try by resiting the ram, you have to swithch off your pc before opening your side cover. If you dont get any thing in the monitor then *********** board is having problem

Apr 13, 2009 | PC Desktops

3 Answers

Emachines model 780 monitor comes on for one second then goes blank


CANNOT COMPUTE!!!! NEED MORE DATA! Is your monitor the problem or the computer? Try connecting the monitor to another computer. You can also try connecting a laptop with an external video adaptor to the monitor to test it.

Oct 12, 2008 | E-Machines eMachines Desktop PC

2 Answers

Blank screen(beeping sound)


Hi Powee,

It's definitly a memory issue. What you might wanna do, is open your CPU and take out the memory sticks from the memory slots. After this, try either blowing or vacumming (if you have one of em small PC vacumm cleaners) the slots whcih contained the memory sticks. Also, dont forget to blow off any dirt that might be on the memory stick(s) itself.

After this, just insert the memory stick(s) back into it's slot(s) and try to rebppt your computer again. Most of the time it should work. However, if you still face this issue, then it means that your memory itself is corrupt and you might need to buy a similar capacity memory altogether.

As a side note, if your computer comes from a manufacturer like dell or acer, you might wanna get them to look into the issue if it;s still under warranty (or even if it's not). Certain "branded" computers have their own way of functioning. Hope this helped.

- Technomancer

Jun 09, 2008 | HP Pavilion 8860 (P2941A) PC Desktop

1 Answer

Screen problem with HP DV 9000


I think Your computer C.P.U. power supply unit is not working properly. because these type of problem occur when Power Supply Unit is not working properly.........

So Don't afraid at all just change your c.p.u. power supply unit with new one (it is not costly at all).

Mar 19, 2008 | PC Desktops

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