Can a motherboard prevent the power supply from coming on if a video card is not installed?
149881
No Not At All Even If Hard Disk Is Not\nInstalled There The MotherBoard Will Keep Movin.
909052
Is there any beeping when you start up your PC?  Have you made sure that the cable is securely connected on both ends for the monitor?\n\nGenerally if ram has bad sectors in it, the PC will still boot up.  I am not sure if this is the same for a video card, but I think so.  Have you made sure the video card is in its slot all the way?  I would open your PC and check.  Oh and have you recently installed any new software or hardware?
1011662
Can you post additional information such as, Speed and type of processor, operating system, what type of monitor connection??  Has anybody moved the wires in the back of our system? are the connections tight? You say you checked the video card, without a screen attached how did you "do" the diagnostics?
270713
The power supply might have gone out.
712246
This message will generally come on when a video card or monitor has been installed that is incompatible with the current settings on your bios. You can try to fix this by going into your bios and restoring the original settings. You can find directions by looking up your pc type and bios in google.
140932
If you don't even get the dell splash screen after replacing a video card, I would try reseating all the power cables going to the mother board. If you still get no video, then maybe you can get a pci video card to use just to get by. Make sure your following ESD procedure when installing parts (you might be frying the part before it even gets into the system).
915047
There should not be any problems. Your main board Bios should automatically detect the sound card and shut off the on-board sound chips.\n\nJust in case your system is not too "intelligent" you may want to go into the Bios settings and see if you need to turn off the on-board sound chip.
154600
This can lead to two things.\n\n1.  Power supply is gone\n2.  BIOS is gone
984243
It sounds like your video card got jarred loose, or is bad.  Try reseating it, if that doesn't work, you may need a new one.\n\nBy the way, the computer itself comes on, right?
348249
well provided that the video card is not on the moter board unplug your computer,you just take the screw off the top bracket and lift the card out, and you do the rev. to put it in..
747652
Okay it is quite possible that there are 2 video inputs, It is possible that there is one integrated to the MB, and one installed in a pci slot, being the NVIDIA card, be sure to check that because the onboard video is probably not installed thus the montior wouldn't be detected to turn on, my brother had that same problem with his Dual Core system I built him... If this doesn't work let me know
34269
Hopefully you have not shorted your motherboard. If you havn't then replacing the SMPS (power unit) will do. Otherwise, you are in for a lot of expense. Buying a new motherboard.
803383
When you turn on your PC, you may see a message on the screen like this: "Press F2 to run setup" / "Press DEL to enter setup" depending on which motherboard you are using. \nPress the required key and go to BIOS setup. Go to the Power tab and select, after power failure --> Stay off. Save the settings and reboot your PC.
631021
try CPU (processor) cooler there is an sensor under the cpu socket on the mainboard so when the cpu gets hot it turn`s off the pc and wont turn it back on until it gets cooled down,since you power it manualy
474876
if it is PCI express 16 you probably installed the card wrong since PCI express 16 sucks memory you MUST install the DIMMs Memory BEFORE you plug the video card in the slot.\nif in doubt remove the video card and the memory and the (battery for 5 minutes) put the battery in first, Then the memory, then the video card, if that doesnt fix it check to see if you have the latest BIOS on your motherboard, and then finally, check for the latest drivers for the video card, Also the PCI express connector takes a bit of effort to seat the video card so use enough force to seat it
48605
If it's a steady whine, with no fits and starts, it's going to be a fan.  The possibilities are power supply fan, cpu fan, video card fan, and system cooling fan. All of them with the exception of the video card fan, are easily replaceable by a layperson with nothing more than a screwdriver.  Luckily, the video card fans are small and less likely to produce much of a noise, so it's probably one of the other three.
265799
Take out the RAM, and try to start the comp. if comp, makes sound then the motherbord shoud be oke.