Before a month ago, I moved the computer place, suddenly after that the graphics card didn't work anymore.
And when I plug the graphics card into the computer and turn it on, The computer won't work at all.
This is very weird, I don't know what happened, I need help

I don't know if this helps but in the past there's been a bug with Windows 10 where the computer fails to initialize/wake up the graphics card. So far there isn't any real fix besides some speculation that graphics drivers need to be updated.

Another suggestion that I have is that perhaps you haven't got enough power from the PSU heading to your graphics card. (Or perhaps the power supply is going out and not providing the watts it used to.) Most computers, such as Dell, have only a 300 watt PSU in them at the time of purchase unless you go out and get a seperate unit.

Hopefully I'm not spouting out bull shit but I could be. Those are just some of the solutions I had to my graphics card not working completely (or at all).

Could you please wait for tomorrow?
Because i don't know the exact speculation of my PC and the time here is 1:45 AM
The speculations I know are:
OS: Windows 7
Graphics card: AMD Radeon
Ram: 4 GB
And if you want more information of what is happening.. Then this explains it more, I just want to add to what I said that I can turn on the PC when the graphics card isn't plugged into the PC, otherwise when the graphics card is plugged then the PC doesn't work at all

It supports the graphics card, like sponsors or something like that, and I can't provide full information right now :|

I'm speculating that his graphics card speculations are probably one of the older models. Kyure if the computer was moved roughly then something in his old graphic card probably just straight up broke. I agree more info would be helpful though. I'm also curious about this situation he has.

Full information:
OS Name Microsoft Windows 7 Professional
1. System Type: x64-based PC
2. Processor: Pentium(R) Dual-Core CPU E5300 @ 2.60GHz, 2592 Mhz, 2 Core(s), 2 Logical Processor(s)
3. Installed Physical Memory (RAM): 4.00 GB
4. Total Physical Memory: 3.75 GB
5. Available Physical Memory: 2.20 GB
6. Total Virtual Memory: 7.49 GB
7. Available Virtual Memory: 5.55 GB
8. Resolution: 1440 x 900 x 59 hertz
9. Graphics card: Radeon HD 3850 X3

Wow that's an old card, it's also a needlessly complex one.

Make sure that all 3 of it's modules are sat in their sockets correctly, could be something as simple as one of them coming loose.

Sorry there has been a mistake :/
The graphics card is ATi Radeon HD 5450 Video Card
--------
http://i.imgur.com/mKz5YXQ.jpg

It's doesn't post, boot, or power at all.
It doesn't response at all And no LED or fan spin etc

I have already replaced my Power supply, but still not working