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So I am testing one of the pcs I got the other day. It turns on, the fan is blowing, and all, but no video is displaying on the monitor. I know the monitor works, so I am guessing the video adaptor on the pc must be bad?
Besides that, not sure what else it might be. I just dont want to sell the motherboard as working, even the video port is bad.
If it has a video card then maybe the card is bad, other than that ???
The video port is built onto the motherboard. No video card.Quote:
Originally Posted by Mechanic688
-Double check your cable and monitor with another system to make sure your cable is still good.
-See if the pc has another video output, some have VGA and DVI or even HDMI sometimes.
-Make sure it's a port on the motherboard and not an actual video card that you can swap out. Might be a bad video card, but the motherboard it good.
-Make sure the voltage is set correctly on the power supply.
-You can always reseat all internal components such as ram, cpu, etc. Sometimes they are not making good connections.
Always follow the golden Rule when working with a computer or testing parts.
1. Always build a functional full working unit ( The golden unit )
2. Replace 1 part to test with the Golden known working parts. If it does not function it's bad.
3. Replace the part back with known working unit. Check your unit to make sure it's still a golden unit.
4. Repeat step 2 then step 3 then step 4
Let it go right now and move onto other units. Follow the above advice if/when you get to it.
Good idea, but these are all servers, and each one different. At least in this group, they are.Quote:
Originally Posted by drozenski
I am, since I am on a deadline for the COD, but aside from that, when you do, you forget that it needs to be done, and list it for sale (ebay or else where) and then you have to do a refund, etc.Quote:
Originally Posted by ryanw
On some computers, just because the fan blows DOES NOT mean the computer is good.
I had an HP Slimline, common cause is the power supply going out, looks like it powers up with no video, but only half the power supply fires up.
The computer can be completely hosed and still turn the fan on when you press the button (newer systems can have a southbridge blow and still power up but its dead).
Get yourself a $5 shipped ISA/PCI POST card from ebay, then you can plug it into a PCI slot and see what activity is going on and where the system hangs up. It also shows what voltages are present and if the reset line works. Also invest in a $5 power supply checker so you can verify the power works before using it in a system.
I've seen ram cause the video not to work also. Thats something else you may wanna look at.
did you get any beeps ?
yeahQuote:
Originally Posted by Bear
Sometimes the number of beeps will give you an idea of what's wrong. Google is your friend there.Quote:
Originally Posted by GeorgeB
coolQuote:
Originally Posted by GeorgeB
George, there is 5 or 6 different voltages in those power supplies. One or two of them can go out without the whole thing going down.
Check the side label and it'll tell you, that's where a power supply checker would come in handy.
http://pcsupport.about.com/od/toolso...supplytest.htm
http://www.bosamar.com/KT4V/Images/PC_powersupply_2.jpg
Just a stab at this, but IF it is actually the built-in video connector that has gone bad, you might be able to add a PCI video card and run the monitor from that.
I haven't tried this, so if anyone knows that it won't work, please let me know.
George, if it is beeping, it is most likely RAM. Try a known good stick and if it still beeps, its trash. I would also unplug power to the hard drive before testing.
I'd be trying a PCI gFx card plugged into a white slot on the mobo. Or if its an AGP gFx card, into the appropriate slot, some brown, some blue, depending on age of the mobo.
Don't forget to switch the monitor cable from the onboard to the PCI/AGP one. ( Its been known for people to forget to do it)
Beeps, depending on the specific BIOS, can also indicate "no video", aside from a bad stick(s) of Ram.
Knowing the make and model # of the mobo and the # of "beeps' i.e. 2 long, 3 short etc., would help
I still saying its the ram. How many video inputs does it have on the computer?