No HDMI signal with the graphics card
Solved
Krosis
Posted messages
3
Registration date
Status
Membre
Last intervention
-
Krosis Posted messages 3 Registration date Status Membre Last intervention -
Krosis Posted messages 3 Registration date Status Membre Last intervention -
Hello everyone,
I'll summarize everything that happened:
Since I tried to clean my graphics card, nothing is displaying on the screen, yet it recognizes that something is plugged in as it simply says "no signal." *
I tried using the HDMI port on the motherboard, with and without my graphics card connected, and I get the same result. I also tried the VGA port, but nothing works, and unfortunately, I don't have a DVI port on my monitor to try it that way.
So, I tested my cables and monitor by connecting my laptop, and everything works...
I then checked my connections inside the case, in case I accidentally unplugged something, but there’s nothing amiss there either.
Then, I noticed that my backlit keyboard wasn't lighting up either, yet the USB ports seem to work since my mouse lights up on any port.
Aside from that, the fans are running, including those on the graphics card, the LEDs on the motherboard and case light up... in short, the computer powers on and everything seems to be working.
After searching online, I came to understand that it could be due to an update, and indeed, I recently did one for my USB and the graphics card, but it seems to me that I was able to use my computer normally between the update and when I dusted it off. So if that's the case, why all of a sudden?
Ultimately, I'd like to know what happened? And how to fix this problem?
Thank you in advance for your responses and your help.
Here are my specifications:
Intel i7 6700K 4GHz
Motherboard: Asus H170M Plus
Graphics Card: Nvidia GeForce GTX 970 4GB
Hard Drive: WD Blue 1TB
RAM: Corsair Vengeance 2x4GB DDR4
CPU Cooler: Be Quiet Shadow Rock 2
Power Supply: Seasonic S12 II Bronze 620W
Windows 10 Home x64
Configuration: Chrome OS / Chrome 67.0.3396.99
I'll summarize everything that happened:
Since I tried to clean my graphics card, nothing is displaying on the screen, yet it recognizes that something is plugged in as it simply says "no signal." *
I tried using the HDMI port on the motherboard, with and without my graphics card connected, and I get the same result. I also tried the VGA port, but nothing works, and unfortunately, I don't have a DVI port on my monitor to try it that way.
So, I tested my cables and monitor by connecting my laptop, and everything works...
I then checked my connections inside the case, in case I accidentally unplugged something, but there’s nothing amiss there either.
Then, I noticed that my backlit keyboard wasn't lighting up either, yet the USB ports seem to work since my mouse lights up on any port.
Aside from that, the fans are running, including those on the graphics card, the LEDs on the motherboard and case light up... in short, the computer powers on and everything seems to be working.
After searching online, I came to understand that it could be due to an update, and indeed, I recently did one for my USB and the graphics card, but it seems to me that I was able to use my computer normally between the update and when I dusted it off. So if that's the case, why all of a sudden?
Ultimately, I'd like to know what happened? And how to fix this problem?
Thank you in advance for your responses and your help.
Here are my specifications:
Intel i7 6700K 4GHz
Motherboard: Asus H170M Plus
Graphics Card: Nvidia GeForce GTX 970 4GB
Hard Drive: WD Blue 1TB
RAM: Corsair Vengeance 2x4GB DDR4
CPU Cooler: Be Quiet Shadow Rock 2
Power Supply: Seasonic S12 II Bronze 620W
Windows 10 Home x64
Configuration: Chrome OS / Chrome 67.0.3396.99
1 réponse
I finally decided to go see a computer technician directly, however, I found this on the internet which might help some:
The big question is to establish a protocol that will allow you to determine what is malfunctioning: the screen, the screen cable, or the central unit. It is important to follow the procedure below meticulously, as 80% of faults come from a bad connection.
Sometimes it even takes 15 minutes to convince the person on the other end to properly plug into the PC's power socket :op (in the meantime, he calls me an idiot, and then he looks all stupid :o) )
It would be good if you could have a working PC at hand while following these steps, as it will allow you to test your gear.
You NEVER manipulate a PC under power. Before any manipulation in the PC, it is essential to unplug the power cable from the PC. (Turning off the power strip is not enough)
Be careful not to fry your components by sending yourself a static electricity discharge)
First thing: Check the screen and the cable on another PC! If you can: take your screen and plug it in VGA (if possible) on another computer.
_Regardless of the result (works or not), repeat the operation with another cable (if you have one). This will help to verify that it is not the cable that is causing the issue. Don’t hesitate to fiddle with the cable (even if it works) to check for a potential short circuit or poor contact. Repeat the operation with your DVI cable, if you can (or if necessary).
_If it works in both cases: the cables and the screen are good
_If it does not work in one case: the cable is defective
_If it does not work in either case, check that the computer is properly configured to display something on the screen.
_Otherwise, check that you are on the correct input of the screen (DVI, VGA, S-video,...) and that the screen menu correctly selects the right signal (input video verification).
_If you don’t even see the “no-input” message on the screen: plug in the power :o)
_If the problem doesn’t resolve, it is very likely that your screen is dead.
Second thing: On your new PC, if you are certain that your screen works in VGA, and that the VGA cable is OK (both worked previously on the other computer).
Check your central unit.
Unplug your central unit completely. And try to find the documentation for your motherboard. To start, we will absolutely dismantle everything except for the processor, its heatsink (or heat sink) and its fan.
We will try to run the computer in minimum configuration. The only things connected to the motherboard will be: the processor, the heatsink and its fan, a hard disk, a single stick of RAM (only one), the power supply and the power button of the case.
So we set aside: DVD drives/burners, case fans, indicator lights, we do not connect audio in front, USB, or diodes. We do not install the graphics card.
Be careful, we do NOT connect the KEYBOARD or the MOUSE!
For the connection: read the documentation of the motherboard, even if you are sure of yourself! Your PC has been down for a few months, 30 minutes of reading will not be wasted
Connections to be made and checked:
1) The processor is properly in its socket
2) The heatsink is properly applied to the processor
3) The fan is on the processor
4) The fan is plugged into the motherboard (be careful, the connector for the processor fan is usually not next to the processor, but opposite on the motherboard (check the doc).)
5) The hard drive is plugged into the motherboard (in IDE or SATA)
6) The RAM stick is properly seated and locked in its socket (and not crooked, sometimes it is not obvious to see)
7) The Power Button of the case is well connected to the motherboard (check the doc, verify the colors), you have not reversed the ground and power, you have not mistaken the pin.
8) The power supply is well connected to the hard drive (SATA or IDE).
9) The power supply is connected to the motherboard (large rectangular connector)
10) The power supply is connected to the processor (square connector on the motherboard) (We often forget this one!)
11) The video cable is properly connected (the plug does not move) to the VGA port of the motherboard.
12) This same cable is properly connected to the screen.
13) Check that the red switch on the power supply is set to 220V (and not 110, unless you live in the USA).
14) Plug your screen into the 220V.
15) Plug your UC into the 220V.
16) Switch the power switching ON (small button behind the power supply).
17) Turn on the screen (first)
18) Turn on the PC by pressing the power button of the case (second)
==> The BIOS should display on the screen
If the BIOS does not display:
_ Are the fans spinning (Power supply and processor?)
- If not ==> plug in your PC!
- If yes: Do you have a message on the screen (No input, or error, or ?)
- If not ==> plug in your screen!
- If yes ==> Check that you are on the correct input on the screen (screen menu), that the cable is properly connected.
- If still nothing: Unplug the power, remove the battery from the motherboard, wait 5 to 10 minutes to reset the BIOS, and put the battery back in the correct orientation.
- If that doesn’t change anything: the problems begin!
You will need to unplug and swap each component one by one to determine which one is faulty. If changing one element makes no difference, put it back before moving on to the next element. (Don't forget to unplug the PC between each manipulation, turn on the PC only to check the result of the manipulation)
1) Swap the RAM with the other stick
2) Swap the RAM stick for another brand
3) Swap the hard drive with a working one (check the jumpers on the drive)
4) Swap the power supply with a working one
If none of this works, it is either the motherboard, or the processor that is dead, or you have made a bad connection again, or there is more than one element causing problems.
As soon as the BIOS eventually displays:
1) Turn off the PC: connect the keyboard and mouse, turn the PC back on
2) Turn off and unplug... : Insert the graphics card into its slot, change the connection to connect to the main port of the card.
--> If nothing appears, turn off the PC, connect the video cable to the other port of the card
--> If nothing still appears, reconnect the VGA cable directly to the motherboard chipset.
--> If the BIOS displays: disable the chipset in the BIOS.
--> Otherwise: Check the input on the screen (in the screen menu) otherwise you have a problem with your video card or the DVI cable.
3) Turn everything off, install the 2nd RAM module.
4 - 5 - 6 - ...) Add each element one by one.
There you go, that’s all I can do for you. Good luck!
It smells like a bad connection all of that!
If that’s not it, it’s most likely the RAM that is incompatible or the power supply that can’t handle the load!
The big question is to establish a protocol that will allow you to determine what is malfunctioning: the screen, the screen cable, or the central unit. It is important to follow the procedure below meticulously, as 80% of faults come from a bad connection.
Sometimes it even takes 15 minutes to convince the person on the other end to properly plug into the PC's power socket :op (in the meantime, he calls me an idiot, and then he looks all stupid :o) )
It would be good if you could have a working PC at hand while following these steps, as it will allow you to test your gear.
You NEVER manipulate a PC under power. Before any manipulation in the PC, it is essential to unplug the power cable from the PC. (Turning off the power strip is not enough)
Be careful not to fry your components by sending yourself a static electricity discharge)
- *** *** *** ***
First thing: Check the screen and the cable on another PC! If you can: take your screen and plug it in VGA (if possible) on another computer.
_Regardless of the result (works or not), repeat the operation with another cable (if you have one). This will help to verify that it is not the cable that is causing the issue. Don’t hesitate to fiddle with the cable (even if it works) to check for a potential short circuit or poor contact. Repeat the operation with your DVI cable, if you can (or if necessary).
_If it works in both cases: the cables and the screen are good
_If it does not work in one case: the cable is defective
_If it does not work in either case, check that the computer is properly configured to display something on the screen.
_Otherwise, check that you are on the correct input of the screen (DVI, VGA, S-video,...) and that the screen menu correctly selects the right signal (input video verification).
_If you don’t even see the “no-input” message on the screen: plug in the power :o)
_If the problem doesn’t resolve, it is very likely that your screen is dead.
- *** *** *** ***
Second thing: On your new PC, if you are certain that your screen works in VGA, and that the VGA cable is OK (both worked previously on the other computer).
Check your central unit.
Unplug your central unit completely. And try to find the documentation for your motherboard. To start, we will absolutely dismantle everything except for the processor, its heatsink (or heat sink) and its fan.
We will try to run the computer in minimum configuration. The only things connected to the motherboard will be: the processor, the heatsink and its fan, a hard disk, a single stick of RAM (only one), the power supply and the power button of the case.
So we set aside: DVD drives/burners, case fans, indicator lights, we do not connect audio in front, USB, or diodes. We do not install the graphics card.
Be careful, we do NOT connect the KEYBOARD or the MOUSE!
For the connection: read the documentation of the motherboard, even if you are sure of yourself! Your PC has been down for a few months, 30 minutes of reading will not be wasted
Connections to be made and checked:
1) The processor is properly in its socket
2) The heatsink is properly applied to the processor
3) The fan is on the processor
4) The fan is plugged into the motherboard (be careful, the connector for the processor fan is usually not next to the processor, but opposite on the motherboard (check the doc).)
5) The hard drive is plugged into the motherboard (in IDE or SATA)
6) The RAM stick is properly seated and locked in its socket (and not crooked, sometimes it is not obvious to see)
7) The Power Button of the case is well connected to the motherboard (check the doc, verify the colors), you have not reversed the ground and power, you have not mistaken the pin.
8) The power supply is well connected to the hard drive (SATA or IDE).
9) The power supply is connected to the motherboard (large rectangular connector)
10) The power supply is connected to the processor (square connector on the motherboard) (We often forget this one!)
11) The video cable is properly connected (the plug does not move) to the VGA port of the motherboard.
12) This same cable is properly connected to the screen.
13) Check that the red switch on the power supply is set to 220V (and not 110, unless you live in the USA).
14) Plug your screen into the 220V.
15) Plug your UC into the 220V.
16) Switch the power switching ON (small button behind the power supply).
17) Turn on the screen (first)
18) Turn on the PC by pressing the power button of the case (second)
==> The BIOS should display on the screen
- *** *** *** *** *** *** ***
If the BIOS does not display:
_ Are the fans spinning (Power supply and processor?)
- If not ==> plug in your PC!
- If yes: Do you have a message on the screen (No input, or error, or ?)
- If not ==> plug in your screen!
- If yes ==> Check that you are on the correct input on the screen (screen menu), that the cable is properly connected.
- If still nothing: Unplug the power, remove the battery from the motherboard, wait 5 to 10 minutes to reset the BIOS, and put the battery back in the correct orientation.
- If that doesn’t change anything: the problems begin!
You will need to unplug and swap each component one by one to determine which one is faulty. If changing one element makes no difference, put it back before moving on to the next element. (Don't forget to unplug the PC between each manipulation, turn on the PC only to check the result of the manipulation)
1) Swap the RAM with the other stick
2) Swap the RAM stick for another brand
3) Swap the hard drive with a working one (check the jumpers on the drive)
4) Swap the power supply with a working one
If none of this works, it is either the motherboard, or the processor that is dead, or you have made a bad connection again, or there is more than one element causing problems.
- *** *** *** *** *** ***
As soon as the BIOS eventually displays:
1) Turn off the PC: connect the keyboard and mouse, turn the PC back on
2) Turn off and unplug... : Insert the graphics card into its slot, change the connection to connect to the main port of the card.
--> If nothing appears, turn off the PC, connect the video cable to the other port of the card
--> If nothing still appears, reconnect the VGA cable directly to the motherboard chipset.
--> If the BIOS displays: disable the chipset in the BIOS.
--> Otherwise: Check the input on the screen (in the screen menu) otherwise you have a problem with your video card or the DVI cable.
3) Turn everything off, install the 2nd RAM module.
4 - 5 - 6 - ...) Add each element one by one.
There you go, that’s all I can do for you. Good luck!
- *** **** **** ***
It smells like a bad connection all of that!
If that’s not it, it’s most likely the RAM that is incompatible or the power supply that can’t handle the load!