It can boot but once in a while,this problem come.Nothing on my screen,no POST beep.removing my graphics card (with the 6 pin power disconnect),using the on board display,I can boot up my pc fine.Then I reinstall back the graphics card and it boot up fine.this happen only like 4-5 times a year.It doesn't happen frequently.And GC stands for graphics card.Sorry for the shortform 
My Computer
- OS
- Windows 7 Home Premium 64bit
- CPU
- Intel Core i5 650
- Memory
- 4GB RAM
- Graphics Card(s)
- GTS 450
- Screen Resolution
- 1600x900
- PSU
- 550W Cooler Master