NO VIDEO!!!
I bought a new graphics card, its an HD 7750 1gb ddr5. After installing the card, turned on my pc, but the screen says "no signal".
PC SPECS:
H-Joshua-H61-uATX
i3 3240 3.4 ghz
gt 610(current graphics card)
8 gb ram
450w power supply
1 tb HD
PLS HELP!!! 
((((