Sudden no DVI/VGA signal

Pavilion p6210y. Stock, nothing fancy.
Over a year ago my power supply exploded abut I replaced it with a Norwood Micro 350W I found in a free box. It worked just fine, we used the computer for about 6 months then set it aside because we got a laptop. The other week I started it again and it worked fine for about 30 minutes then the monitor shows me no DVI/VGA signal and go to sleep. The computer is still running. I let it rest for a day and then started it again and the same thing happened. Power supply? Motherboard?
Thanks!,
Joe, Mpls

Hi Joe,
Your PC might be full of dust and then overheating.
Try this procedure:
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. You might want to buy a can of compressed air to blow the dust out of the CPU heat sink. Plug your PC back in and give it a go.
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Does Mini Displayport to DVI adapter support analog VGA signal?

I'm just about to buy a macbook pro. Since the MDP (mini displayport) to DVI and MDP to VGA adapters are £20 a pop, I can only afford to get one. Obviously DVI is better in general, but VGA supports more older hardware, CRTs, and the spare VGA input on one of my displays (where the desktop uses the DVI).
What I'd like to know is does the MDP to DVI adapter also support the analog VGA signal on certain pins (like most physical desktop DVI ports do)? If it does, since I have about 3 or 4 DVI to VGA adapters lying around, I can get the MDP to DVI adapter and use the DVI to VGA adapters with it if necessary, but if it doesn't I might be better off getting the MDP to VGA...

No. Unlike DVI, which in the DVI-I configuration has both digital and analog pinouts, DisplayPort (and mini-DisplayPort) are purely digital. Mini-DP to DVI then DVI to VGA will not work. If you look carefully at the Apple Mini-DisplayPort to DVI adapter, you'll notice it's a DVI-D connector - digital pins only.
The Apple mini-DisplayPort to VGA adapter contains a digital-to-analog converter.
So, you'll have to choose. If you want VGA, get Apple's mini-DisplayPort to VGA adapter.

No VGA or DVI input signal

I recently found my old HP Pavilion a6228x after 2 months of not using it, and hooked it up to my w1907 monitor with a vga cable. It says that there is no VGA or DVI input signal, with the black arrow pointing at DVI. I can't switch from DVI to VGA because everytime I press the menu button, the screen will say "Monitor going to sleep." The monitor works fine with my laptop and the same vga cable. Help?

Hi,
Since the monitor and cable are known to be good then make sure that you are plugging the video card into the video card's VGA port if a a video card is installed. If the video card has a DVI port then use a native DVI cable between the monitor and the video card.
If there is a video card in your PC then try reseating it (remove and replace). If that doesn't work then remove the video card and plug the VGA cable into the motherboard's VGA port.
Only connect one active video feed to the monitor.
Try a monitor reset. Unplug the monitor’s power cord and hold down the monitor’s power button for 30-60 seconds. Plug the monitor back in and power it up.
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Computer Will Not Start, No DVI or VGA Signal, Beeping

My desktop HP was working fine until recently. I want to buy a new graphics card, so I took off the side of the tower to check if I have a place to install the new graphics card. Before I could do anything, I had to leave home, so I replaced the side of the tower. I DID NOT touch anything inside of the unit at any time, I only touched the side. Now, when I try to turn the computer on, the screen says that there is no DVI or VGA signal and the computer beeps at me (short, then long). I disconnected the cables from the back of the computer and reconnected them, and I cleaned off the fans,which didn't fix it. I looked up the beep code, but nothing seemed to make sense to me there or help me at all for that matter. I have no clue how to fix this! Please help!

Something has been dislodged during your "look-see". Suggest you read this guide: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph03886&tmp_task=solveCategory&lc=en&dlc=en&cc=...
Troubleshooter for Video:http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00061509&tmp_task=solveCategory&lc=en&dlc=en&cc...
I am a volunteer. I am not an HP employee.
To say THANK YOU, press the "thumbs up symbol" to render a KUDO. Please click Accept as Solution, if your problem is solved. You can render both Solution and KUDO.
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Controlling the DVI/VGA output

Apologies if this seems off the Keynote topic. I couldn't find any mention of this in the posts.
Is there any way to turn on/off the DVI/VGA output to a projector from the keyboard, (iBook/Power Book)? With the wintel stuff I used to be able to F5/F7 (or whatever) to do this.
Cheers
Rich

I've never seen anything like that on a Mac. Are you SURE that key command on a Wintel actually turns OFF the port? No other port on a computer can be turned off, so that feature surprises me. I'd think it would make a projector suddenly put up a large NO SIGNAL message on your screen.
You can use F7 on a mac to turn on and off Video mirroring if you have a Powerbook, though if you're looking for a way to black the projector, I usually use the projector controls to do that, or freeze the screen. Another option is to make your desktop background BLACK, so when you exit a Keynote show, all the audience sees is black. This only works when NOT using mirroring though.

Mini-Dvi - VGA Problems

I just bought a mini-dvi to vga adapter from apple but can't get it to work with my philip's hdtv. It works perfectly when plugged into my pc monitor, but when going into the tv I just get a blank screen with "no signal detected". I've using a VGA to DVI convertor on the cable going into the tv, I know I should have gotten a straight mini-DVI to DVI cable, but I wanted to be able to use VGA as well.
My old iBook worked perfectly, but it detected my tv as a VGA monitor, whereas the MacBook detects it as a HDMI display. Is there any way I can force OS X to set my TV as a VGA display? Or is there any other fix around?
My tv is DVI-I in I think, which I read elsewhere has caused some conflict with mac mini's.
Thanks in advance...

Well, I just got myself a mini-DVI to DVI adaptor so that I could connect it to a DVI-VGA adaptor and on to my VGA (Apple) CRT.
I may get a DVI-capable monitor in the future, so it seemed like a good future-proofing exercise. Unfortunately the DVI plug has four more pins (around the flat-blade pin) than the port on the mini-DVI adaptor has holes!
so it doesn't fit.
DRAT! I have been waiting for the DVI adaptors to come into the Apple Centre for a couple of weeks, and now it's no good! Grrr.

VGA signal output type mDP-VGA adapter

Howdy.
Working on a way to plug our new mini (early 09) into a crusty ol' analogue tv, whose best quality input is up to 576p component. Tv manual say to plug component source (either YPbPr, YCbCr or Y B-Y R-Y) into the component input on the tv (Y Pb Pr).
My understanding of signal types is limited, and I am looking at a VGA to component converter as my first preference option since svideo and composite are so crusty.
Can anyone be really specific on the exact type of signal output from the miniDP-VGA adapter? As far as I know, most computers output a vga signal referred to as RGB, which SOME tvs can read via component in. Can anyone tell me if this RGB equates to any of the above signals (such that i could simply use a vga-component cable that I already possess), or if i will definitely need to get a converter box? I have plugged my older mac mini into the tv (using dvi-vga adapter supplied and then vga-component cable i purchased form some dodgy online ebayer) and had no luck.
can anyone tell me the potential ramifications of messing around with this stuff? Can inputting incorrect signals damage any of my hardware?
does anyone have any brilliant ideas on how to run an early 2009 mac mini into a tv via component? At this stage it is going to cost me around $200 for a decent converter box , and being a younger generation I want a solution ASAP and would prefer not to wait weeks for shipping from the States.
It seems as though the new minis only do dvi-d, while my older one has dvi-i - this is why the dvi-video adapter is not compatible with the early 09 models. i have spoken to apple tech support several times but it seems as though they are getting their dvi types mixed up and don't understand my predicament fully, as their suggestions are not possible with dvi-d. Is there such a thing as a DVI-d to DVI-I adapter? Would it make any difference?
Any clarification people have to offer on this one would be greatly appreciated.

A few comments; first off, you can't damage a TV with wrong signal types, although some old TVs can be damaged from wrong timings. That's going to depend a lot on the TV's age whether it has a more modern, multi-sync type chassis or not.
The Mini DVI output on the new mini is DVI-I. That is how it is able to support the Mini DVI to VGA Adapter that Apple sells for the new mini. But you are right it no longer supports the Mini DVI to Video Adapter. But that is an issue with drivers and has nothing to do with the mini having a DVI-I output or not. But it is definitely Mini DVI-I.
So to connect a component converter box, you could use either the Mini DisplayPort or the Mini DVI output of the mini. I would tend to recommend the Mini DVI as being somewhat more standard. However, a Mac really wants to see something called a plug-and-display driver, which is also known as EDID, whenever it is connected to a display. So try and see if you can find a component video converter having a VGA input that has an EDID loaded into it or else the Mac will not be happy and it could all be money down the drain that would have better been spent on a new TV.
Hopefully you will get some more specific information from someone else. Good luck.

HDMI to DVI No Signal Detected

I have a late 2006 MacBook Pro running OS X 10.6.6. I recently purchased an LG LED-LCD television as well as a HDMI to DVI adaptor cable, both from Amazon (the cable is an Amazon Basics cable). When plugged in to both the laptop and the television, there is no signal detected by the television and no display detected by the laptop. I've tried each of the three HDMI ports on the television, but to no avail. I returned the cable and exchanged it for an identical one, but the problem persists.
In searching through the forums, I've seen that quite a few people have had issues with this same setup, and I'm wondering if somehow I need more than just the cable to connect to my television (which doesn't make sense, but could still be the case). I've run a diagnostic on my laptop during startup, and found no issues with the hardware, so I'm 99% positive that I don't have a bum DVI port. At this point I'm just not sure what to do to get this to work, so any assistance would be wonderful.

Sorry for any confusion, my last post was sent before reading your second post.
The VGA test proves nothing about the DVI output. The DVI ports on these Macbook Pros is a combo DVI and analog VGA port (DVI-A). The DVI-VGA adapter does nothing more than connect the VGA to VGA, and does not convert the DVI to VGA. You have to use an actual DVI device to test the DVI. The 4 pins and large blade on the end of the DVI connector are the VGA pins - they can be omitted on a DVI-HDMI adapter with no harm.
I really don't know if there could be a problem with the software on the Mac and/or TV, and the cable just fine.
Perhaps try to seek out someone who has a working DVI-HDMI cable to try? Or try a store that will demonstrate that it works and has a money back guarantee?

DVI - No Signal - 560ti Hawk

Hi all,
I have had my GTX560ti Hawk(great card when it works...) for a couple of months now & from the second week i have been receiving a 'dvi no signal' error on a black screen.It is very random & can happen anytime wether my pc is idle,browsing,(never actually happend during gaming tho).My first couple of times it happened i had to clear CMOS to get back to windows but now i just hard shut down & reboot.The weird thing is when it happens,i still have sound & my music will keep playing like nothing is wrong.I have tested both DVI & VGA & still get the error,also i have tested both ram sticks & dimm slots,HDD,DVD Drive & all have been given the pass mark (i was thinking it might be the mobo).
I am starting to think it is the GPU,voltage maybe ? power issue ? I have never touched any settings in afterburner other than set up my fan profiles so everything is stock.My temps run fine @ idle (30 degrees) & under load (75 degrees in BF3),no issues there.Case cooling is excellent.EVER driver & bios is up to date unless there has been a msi GPU bios update for this card in the last month ??? Any & all help is appreciated
PC specs
Intel i7 2600k w/ cooler master v8 CPU cooler
ASUS P8p67-m-pro
2x4gb corsair vengeance 1600 ram
MSI gtx560ti hawk (70.24.11.00.00 bios)
ASUS V242h 24" LCD
650w cooler master extreme power plus PSU
Win7 64bit
Seriously,its becoming a real issue for me & i am pleading for some help !!!
Regards
Joe

I've been having similar problems myself with the screen crashing and going black when hovering the cursor over a browser link, lots of 560 Ti users have. I can't be sure you are experiencing my exact problem but I think swapping drivers is worth a try, it sure can do no harm. As far as I know the only game making good use of the newest Nvidia drivers (anybody can correct me on that if needed, lately I played The Witcher 2, Hard Reset and Deus Ex Human Revolution, I might not be completely up to date with the most current games and related driver issues) is Battlefield 3. Incidentally this forum has seen a big increase in the number of new users complaining of problems occurring when playing BF3, from what I read especially in multiplayer. Another forum to check is the Nvidia one.

Minidisplay Port HDMi - DVI - VGA

Hello there..
i have a minidisplayport HDMI and i want to connect to an external monitor with vga.
I have connected a vga adaptar to dvi adaptar to minidisplay port hdmi.
The problem is that the macosx recognize the model of monitor but in monitor says " no video input"
Anybody can help me ?
tks

A mDP to HDMI adapter won't pass analog (VGA) signals. You're going to need an Apple Mini DisplayPort to VGA Adapter.

Concerns about DVI-VGA Adaptor

My TV only get DVI outlet, so i got a VGA-DVI adaptor the other day to work with the original DVI-VGA adaptor. What i've done was simply to connect the two VGA outlet and plug-in DVI outlet to its repective terminals. However,although my Pro was able to detect the TV and identify its model as well, the TV had no reaction whatsoever. What's wrong with that? Did i connect them in a right way?
Thanks a million for your help?

To connect a DVI TV to a MacBook Pro, you need a DVI cable. DVI to VGA adapters block the digital video signals needed by the DVI port on the TV. Other signals do get through, which is how the computer identified the TV.

DVI-VGA Converter Help...

I have an older model G5, My display which was one of the old models with the clear plastic frame around it broke, so I just replaced it with 2 LG screens that I am going to link together. I got a DVI/VGA adapter for both of the screens and only one fit into the back of the computer. The other input seems longer than the normal DVI input. Would anyone know which converter I need to buy and where I can purchase it? Thank you.

Thank you. I know this may sound insane but let me know if u think this will work. I already have a VGA to a DVI adapter. If I get a ADC to DVI adapter, can I think link all 3 of them together?
ADC to DVI adapters use DVD-D. They only transfer the digital video signals. A DVI to VGA adapter needs the analog video signals from DVI-A or DVI-I. It will not work with (or even plug into) DVI-D.
(Some ADC to DVI adapters may use a DVI-I connector, but the analog video pins are not connected, so will not work with a DVI to VGA adapter.)
Do your LG didplayd hsave DVI ports?

Macbook 2,1 dvi-vga video adapter, which one will work?

Hi all,
I just purchased a mini dvi-vga video adapter (M9320GA) for my macbook 2,1 and it didn't fit. So this time I want to make sure I get the right one so I can hook up my external monitor to my laptop. Would you be kind enough to point me in the right direction?
TIA, Tross

Thank you for the welcome Doug!
Well if it should fit all macbooks my Macbook is either a mutant or the adapter is, as it is the laptop-adapter connection, that is the problem. I intend to plug it into a DVI monitor and that end fits fine.
To be more specific the avi connection when compared to the port it plugs into, is too narrow. That is, the sides are the right width but the adapter connector isn't tall enough to fit. Perhaps it would help you understand what I'm saying better if you saw it, so I'll include a link to the ebay page I'm reselling it on:
http://cgi.ebay.com/Apple-Mini-DVI-To-VGA-Adapter-M9320GA_W0QQitemZ260189585262Q QihZ016QQcategoryZ80063QQtcZphotoQQssPageNameZWDVWQQrdZ1QQcmdZViewItem
TIA,
Tross

Mini DVI - VGA Issue

I purchased a Mini DVI-VGA adaptor from Apple over a year ago. I've used it only to connect my Macbook to a projector. Once connected, the screen will flash briefly and then the resolution will change and I will be able to switch back and forth from single screen to dual screen by clicking F7...but this was back when things were beautiful and I had no issues.
Now, my adaptor will not work...neither would another Min DVI-VGA adaptor that I tried...but yet the port will work when I connect my Mini DVI-SVideo/RCA adaptor.
Is there a setting that I may have changed? It doesn't seem to be a hardware issue because the port will work with a different type of adaptor.

Hi. I have pretty much the same problem: everything was fine until yesterday. As usual, the screen flashed briefly but then the resolution DID NOT change and the projector could not connect. After removing the adaptor, the screen flashed again but that's it but there was no difference as the resolution had not changed. To note that the adaptor is (grrrr) new (bought about a month ago). Could it be an issue with MAC OS 10.6.2? or maybe the firmware needs an update? I'd be glad if someone could help. Cheers,
Message was edited by: pbeauverd

Mini dvi-vga problem - Need help

When I connect my mac mini to a 32 inch Samsung HDTV via a dvi-vga adapter, the source is not recognized. I jsut get a black screen. However, when I connect it to the HDMI port, it works great. But, I wantto use the HDMI port for the Television source, not the computer source.
Any ideas?
Thanks

Did you get the mini-DVI to VGA adapter from Apple? Are your other cables okay?
Perhaps a mini-DVI to video adapter would be a better choice for you.
~Lyssa

Sudden no DVI/VGA signal

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