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Monitor black off while CPU power runnning

Last answer on Nov 9, 2009 10:16:57 am GMT Elaine, on Oct 28, 2008 12:05:05 pm GMT 
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Hello,

I am having a problem on the desktop pc. My monitor screen is black off while the cpu is still running.I had run the monitor on another cpu that is work. then, I had try to uninstall the graphic card Sapphire X550, shut down & switch off the pc and then remove the graphic card from the expansion plot. After replug the graphic card and switch on the pc & install back the graphic card driver and the desktop is working as normal. I had try to set the MHz to the lowest MHz at the right click desktop properties. After few day, the same problem come again. May I know where can be the problem? Is it the graphic card or the motherboard?


Thanks in advance for the help & comment.

Regards,
Elaine

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1

xpcman, on Oct 28, 2008 8:51:14 pm GMT

Yes it is the Video card or the motherboard. How do you tell which one? Only by replacing one or the other.

   
Reply to xpcman

5

Annie, on Jan 28, 2009 5:29:45 pm GMT

Hey! My desktop does that too. At first I left it alone for a while and when I moved the mouse it stayed normal for about ten minutes but then returned to blacking out every 5 seconds. I replaces the monitor and a few months later it's doing it again. so i think it has something to do with the computer. If anyone gives you an answer that solves it please contact me!

   
Reply to Annie

8

mc2, on Mar 31, 2009 5:27:09 pm BST
  • +1

Just keep turning the monitor off and on until it stays on. Eventually it will. It took me about a half hour of turning it off and on before it finally stayed on. Then don't ever turn it off again, it might not come on again. I got the tip from an online forum - it works!

   
Reply to mc2

9

Unsure, on Apr 12, 2009 12:14:04 am BST

Hmmm i'm not sure but did u check your ram lol maybe it's damage??

   
Reply to Unsure

10

power of problum on a pc, on May 29, 2009 8:59:19 am BST
  • +3

I had the same prblum and it tooks me 2weeks to find out what is wrong with my pc
it is simple the cable which connect you monitor is the problum ,your pc doesn't give signal to your monitor or your monitor connector a pin is bended or missing you grafic card is not reading don't be confused
is very simple
power saving off mode it means (no segnal from your mother board to your monitor )

   
Reply to power of problum on a pc

11

danny_carsone, on Jun 13, 2009 3:10:39 am BST

I think you should check your OS.
i boot to the another OS in my computer and it just work fine.

   
Reply to danny_carsone

12

amm, on Jun 15, 2009 4:15:52 pm BST

I think this is a thermal issue with this monitor. I am now on the second monitor from dell and both have had the issue where it starts shutting off after 30 or so seconds. The power button remains green but the screen is black. I have rigged a 60mm fan, approx 4CFM, to the rear louvers of the monitor to blow inward. This keeps my monitor going. If i turn the fan off it shuts off in about a min. From what i have noticed there is probably some issue with the thermal cutout switch or the thermal management design all together.

   
Reply to amm

15

tech, on Sep 12, 2009 2:47:24 am BST

Hello dell monitor have some capacitor problem in power supply board inside monitor i have replace 25 monitor capacitors and all of them are working fine

   
Reply to tech

13

Ghost_rider, on Jul 30, 2009 7:04:46 pm BST
  • +7

Dude its the mother board problem for sure. I had faced the same problem few months before and geuss wht 8 small IC'S had burned out...lol . So try this-- try pressing the num lock key when ur pc is on n mointor has blackedout , if the num pad key light (green) light lights up( there r 3 small lights on the key boards -the 1st one i talking about) then ur motherboard is ok. but if not give it for a repair....... Hope it does not cost much lolz..

   
Reply to Ghost_rider

14

bhupi, on Aug 13, 2009 4:19:24 pm BST

Hello,

I am having a problem on the desktop pc. My monitor screen is black off while the cpu is still running.I had run the monitor on another cpu that is work. then, I had try to uninstall the graphic card Sapphire X550, shut down & switch off the pc and then remove the graphic card from the expansion plot. After replug the graphic card and switch on the pc & install back the graphic card driver and the desktop is working as normal. I had try to set the MHz to the lowest MHz at the right click desktop properties. After few day, the same problem come again. May I know where can be the problem? Is it the graphic card or the motherboard?


Thanks in advance for the help & comment.

Regards,
Elaine

   
Reply to bhupi

16

Mand, on Nov 9, 2009 10:06:27 am GMT

Hello

I had the same problem and found a solution - or found out what was actually the problem.

First of all let me say that it is not the CPU or the harddrive!

I tried un-pluggng all the cables and re-plugging it all back in again - but nothing worked.

Then I pressed the on-button on the monitor and held down the Auto button which is also located at the bottom of the monitor screen.
I had a menu option that said 'repair windows environment' 'advanced option' 're-start windows' etc.
I chose to 're-start windows' - this restarted the computer but I still ended up with a black screen.

So I repeated the above process of pressing Auto and on-button, menu came up. I selected option 'repair windows environment'
Then after loading and 2 screens that flashed - I got a black screen with white writing, a little down the screen it said something like 'repair windows environment' and then a count down timer in seconds. This option is a waste of time as there is nothing wrong with Windows. I selected the next option down 'start as normal' and pressed enter.

My screen was back!!

I closed it down and re-started it to see if it worked. Black screen again!

So then I started to adjust the cable head - the part that is plugged into the monitor.
First time it did not work but I did see some light flashing so I continued adjusting then pressing the on button on the monitor and suddenly it came on, I could see my desktop icons.

I am having this problem a lot now and have to always adjust the cable head - so I think it must be the cable.

Good luck!

   
Reply to Mand

17

 Mand, on Nov 9, 2009 10:16:57 am GMT

Continued from above post as text got cut off................

Hello

I had the same problem and found a solution - or found out what was actually the problem.....................

..............and pressed enter

My screen was back!!

I closed it down and re-started it to see if it worked. Black screen again!

So then I started to adjust the cable head - the part that is plugged into the monitor.
First time it did not work but I did see some light flashing so I continued adjusting then pressing the on button on the monitor and suddenly it came on, I could see my desktop icons.

I am having this problem a lot now and have to always adjust the cable head - so I think it must be the cable.

Good luck!

   
Reply to Mand
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