GPU wont work after taking out

[keshis]

I took out my gts 450 from my motherboard, but on one side it was harder to take out, so I used some force. I use HDMI out. Computer starts, max resolution is only 1280x something. I went Screen resoliution > Advanced Settings, and gpu was not detected. Fan is working. Btw my pc is dusty. I tried opening very old game like Street legal racing redline, and it just made a error. If i try to open game like CSGO, it just doesnt make anything. Is my GPU dead or not, because i use HDMI in gpu.

Edit: no sound with hdmi and the screen is not full, some black borders around it.

 

[noriel]

Try to plug your monitor on other gpu port, if its working fine, then maybe your hdmi port is the problem

 

[keshis]

Try to plug your monitor on other gpu port, if its working fine, then maybe your hdmi port is the problem

I pluged in vga, but it still doesnt show my graphic card info, but i can set 1600x1200 resolution now(monitor can make 1080p).

I was using it before, but after reassembly it doesnt work properly.

 

[RobCrezz]

Are you making sure you plug the monitor into the graphics card, not the motherboard?

 

[keshis]

Yes, im sure i plug it into gpu. Previous owner told me that motherboard's vga port is disabled.