There is some good advice here, but before you spend any money you should check that your monitor cable is securely fastened. It could just be that the cable is loose. Also check that your graphics card is slotted firmly into its socket. I had a similar problem where the graphics card was not properly seated.
Is it just a black screen, or do you see “No signal”, or “No signal strength”?
Just curious, because if you do, the monitor/s are good, the computer is not.
This much you have deduced so far, by using known good monitors.
IF, you have a graphics card, and NOT Integrated Graphics, perhaps the Graphics card has become unseated in the expansion slot, on the motherboard. If you have moved the computer tower around recently, or the graphics card wasn’t seated very well in the first place, this is a possibility. Not likely though!
Perhaps the graphics card itself is bad. Maybe.
A lot of times if you’re using a flat screen LCD monitor, the video cable, that goes in-between the computer and the monitor is bad.
When you used the other monitors, did you change video cables also?
Try another cable.
You may have Integrated Graphics. Another name is On-Board graphics. This is a graphics chip soldered to the motherboard, and isn’t a graphics card that you can install and remove.
(If you plug your monitor into the I/O area, you are using Integrated Graphics. I/O stands for Input/Output. This area is where you plug your keyboard and mouse into, for example)
There is no graphics card to become unseated. Check your video cable by replacing with a know good one. Also the following.
You may have a bad power supply. I have a shop, halfway full of computers with this problem. A LOT of computers out there, have this problem.
Lights will light up, fans will spin, and the harddrive sounds like it’s running. (The harddrive is running in an endless loop, if it is running)
The lights use less wattage than is worth typing here. Less than 1 watt.
The fans use 2 to 3 watts each. The harddrive running in an endless loop, doesn’t use much at all.
When it comes time for the BIOS program to start the processor, the power supply falls flat on it’s face. Processors use a lot of wattage, and the power supply has developed a bad voltage rail. It can no longer supply the needed wattage. (Volts times Amps=Watts)
Electrolytic Capacitors have gone bad in the power supply. The capacitors have Electrolytic Paste inside them, and the paste has developed a gas. This gas pushes the seals out in the capacitor/s, and the paste oozes out slowly. The capacitor/s will work for a while, then when too much paste has oozed out, the capacitors fail.
Capacitors used in a power supply are filters. They filter the DC electricity into true DC electricity. DC electricity comes out of the rectifier bridge as raw DC, and needs to be filtered, to be true DC.
If it isn’t, this causes a weak, or eventually bad voltage rail.
There are two main causes of Electrolytic Capacitors going bad. Sometimes it’s a combination of the two.
One, the owner hasn’t cleaned out the inside of the computer, and the power supply, on a regular basis.
Dirt/Dust/Animal Hair/People Hair/Carpet Deodorizer/Food Crumbs/Spider Webs/Dead Bugs, you name it, has built up inside.
Two, many electrolytic capacitors suffer from a bad electrolytic paste formula.
1.http://en.wikipedia.org/wiki/Capacitor_p…
2.http://capsmod.net/forum/viewthread.php?…
That’s why I think it could be a bad power supply.
hmmm this problem seems to be affecting a lot of consumers.
Well i have a checklist for you to take part in order to try and work the monitor:
# Firstly check the life span of the monitors and see if it requires servicing.
# Check the cable from the CPU Tower to the monitor. Check for kinks, knots, breaks/rips or any imperfections.
# See if the CPU is compatible with the Monitors. (in only some cases)
# Call the manufacturer for a referral and to confirm its life and quality. You might receive a service or warranty.
# Finally make sure the LCD or screen is not depressed, or has been depressed as this could cause a heat expansion and ruin the electrical circuits within the body.
If all this doesn’t work.
I’m a really bad Advice Giver… and the Monitor is now rubbish.
thanks. =D
Try booting to safe mode, if it shows a picture there you’ve set the resolution and/or the refresh rate too high for the monitor to handle.
If it doesn’t show a picture at all (and you tried it with different monitors) it’s quite likely your graphics card is broken.
This sounds like either the cable or your graphics card is broken. I would try to replace the cable first.( Due to cost) If you try a new cable or one you know works and still the same thing then it will be your graphics card(if its a onboard graphics job the get a plug in and play one.
February 8th, 2010 at 2:42 am
There is some good advice here, but before you spend any money you should check that your monitor cable is securely fastened. It could just be that the cable is loose. Also check that your graphics card is slotted firmly into its socket. I had a similar problem where the graphics card was not properly seated.
February 8th, 2010 at 2:42 am
Is it just a black screen, or do you see “No signal”, or “No signal strength”?
Just curious, because if you do, the monitor/s are good, the computer is not.
This much you have deduced so far, by using known good monitors.
IF, you have a graphics card, and NOT Integrated Graphics, perhaps the Graphics card has become unseated in the expansion slot, on the motherboard. If you have moved the computer tower around recently, or the graphics card wasn’t seated very well in the first place, this is a possibility. Not likely though!
Perhaps the graphics card itself is bad. Maybe.
A lot of times if you’re using a flat screen LCD monitor, the video cable, that goes in-between the computer and the monitor is bad.
When you used the other monitors, did you change video cables also?
Try another cable.
You may have Integrated Graphics. Another name is On-Board graphics. This is a graphics chip soldered to the motherboard, and isn’t a graphics card that you can install and remove.
(If you plug your monitor into the I/O area, you are using Integrated Graphics. I/O stands for Input/Output. This area is where you plug your keyboard and mouse into, for example)
There is no graphics card to become unseated. Check your video cable by replacing with a know good one. Also the following.
You may have a bad power supply. I have a shop, halfway full of computers with this problem. A LOT of computers out there, have this problem.
Lights will light up, fans will spin, and the harddrive sounds like it’s running. (The harddrive is running in an endless loop, if it is running)
The lights use less wattage than is worth typing here. Less than 1 watt.
The fans use 2 to 3 watts each. The harddrive running in an endless loop, doesn’t use much at all.
When it comes time for the BIOS program to start the processor, the power supply falls flat on it’s face. Processors use a lot of wattage, and the power supply has developed a bad voltage rail. It can no longer supply the needed wattage. (Volts times Amps=Watts)
Electrolytic Capacitors have gone bad in the power supply. The capacitors have Electrolytic Paste inside them, and the paste has developed a gas. This gas pushes the seals out in the capacitor/s, and the paste oozes out slowly. The capacitor/s will work for a while, then when too much paste has oozed out, the capacitors fail.
Capacitors used in a power supply are filters. They filter the DC electricity into true DC electricity. DC electricity comes out of the rectifier bridge as raw DC, and needs to be filtered, to be true DC.
If it isn’t, this causes a weak, or eventually bad voltage rail.
There are two main causes of Electrolytic Capacitors going bad. Sometimes it’s a combination of the two.
One, the owner hasn’t cleaned out the inside of the computer, and the power supply, on a regular basis.
Dirt/Dust/Animal Hair/People Hair/Carpet Deodorizer/Food Crumbs/Spider Webs/Dead Bugs, you name it, has built up inside.
Two, many electrolytic capacitors suffer from a bad electrolytic paste formula.
1.http://en.wikipedia.org/wiki/Capacitor_p…
2.http://capsmod.net/forum/viewthread.php?…
That’s why I think it could be a bad power supply.
February 8th, 2010 at 2:42 am
hmmm this problem seems to be affecting a lot of consumers.
Well i have a checklist for you to take part in order to try and work the monitor:
# Firstly check the life span of the monitors and see if it requires servicing.
# Check the cable from the CPU Tower to the monitor. Check for kinks, knots, breaks/rips or any imperfections.
# See if the CPU is compatible with the Monitors. (in only some cases)
# Call the manufacturer for a referral and to confirm its life and quality. You might receive a service or warranty.
# Finally make sure the LCD or screen is not depressed, or has been depressed as this could cause a heat expansion and ruin the electrical circuits within the body.
If all this doesn’t work.
I’m a really bad Advice Giver… and the Monitor is now rubbish.
thanks. =D
February 8th, 2010 at 2:42 am
Try booting to safe mode, if it shows a picture there you’ve set the resolution and/or the refresh rate too high for the monitor to handle.
If it doesn’t show a picture at all (and you tried it with different monitors) it’s quite likely your graphics card is broken.
February 8th, 2010 at 2:42 am
This sounds like either the cable or your graphics card is broken. I would try to replace the cable first.( Due to cost) If you try a new cable or one you know works and still the same thing then it will be your graphics card(if its a onboard graphics job the get a plug in and play one.