This isnt a new graphic cardIs this graphics card a new one you've just installed?
Please post full system specs including PSU make & model, like so:
Motherboard
CPU
GPU
RAM
PSU
PSU CE-450W-12CMV3 Model CasecomNeed PSU details please --- open the PC case and take a look.
Was this graphics card working okay on this same PC and now it just suddenly stopped working?