I have not had a big problem like this in a long time. It is about time something happened, no? 
A few days ago I got my new PCI-E graphics card (ATi X700Pro). Unfortunately, when I plugged it in to my PCI-Express slot, and connected the monitor to it, and then started up the computer, the monitor got a "No Signal" sign. It was basically as if it was not connected to the computer at all. I literally get the same result if the monitor is unplugged.
I contacted support about 8+ separate times... support was great, but unfortunately no solution was found. Here are all the things that were tried:
1. I followed the instructions manual in every point. I uninstalled my previous card's drivers.
2. I even disabled my previous card from the "Device Manager" list.
3. Tried updating my BIOS.
4. On startup, I accessed the bios and switched the Display option from "Onboard" to "PCI-Express."
5. Checked the power supply with the support staff -- Does not seam to be the issue (PCI-E card required 300W, exactly what the computer has).
6. Trying to follow other online steps the support team gave me.
7. Running PC Doctor.
Basically the computer does not seem to know there is a new hardware component installed. And as a related note, I could not run PC Doctor successfully because I could not see the card on the list. The card was not even listed in the "Device Manager" list.
And to confirm that, I put in the CD that came with the card to install the latest drives, and it also said it could not find the required hardware.
Everything works fine if it is connected to my previous onboard card, even though its drivers and it are disabled.
I've had other PC problems before, but this one remains the only one who nobody could solve (neither I nor support). And I do run on the philosophy that every problem has a solution as well, but it does not seem to work here.
I'm just trying to get ideas from as many people as possible.

A few days ago I got my new PCI-E graphics card (ATi X700Pro). Unfortunately, when I plugged it in to my PCI-Express slot, and connected the monitor to it, and then started up the computer, the monitor got a "No Signal" sign. It was basically as if it was not connected to the computer at all. I literally get the same result if the monitor is unplugged.
I contacted support about 8+ separate times... support was great, but unfortunately no solution was found. Here are all the things that were tried:
1. I followed the instructions manual in every point. I uninstalled my previous card's drivers.
2. I even disabled my previous card from the "Device Manager" list.
3. Tried updating my BIOS.
4. On startup, I accessed the bios and switched the Display option from "Onboard" to "PCI-Express."
5. Checked the power supply with the support staff -- Does not seam to be the issue (PCI-E card required 300W, exactly what the computer has).
6. Trying to follow other online steps the support team gave me.
7. Running PC Doctor.
Basically the computer does not seem to know there is a new hardware component installed. And as a related note, I could not run PC Doctor successfully because I could not see the card on the list. The card was not even listed in the "Device Manager" list.
And to confirm that, I put in the CD that came with the card to install the latest drives, and it also said it could not find the required hardware.
Everything works fine if it is connected to my previous onboard card, even though its drivers and it are disabled.
I've had other PC problems before, but this one remains the only one who nobody could solve (neither I nor support). And I do run on the philosophy that every problem has a solution as well, but it does not seem to work here.
I'm just trying to get ideas from as many people as possible.