HELP!!!! by Lay

Hi, I just bought a 750 ti from you guys but when I got it and installed it, it was OK for the first bootup but then when I restarted it because the mouse wouldn't work the screen was a fuzzy red! So is it that the power supply has fried my graphics card or it just can't give it enough power? If it has fried it could I get a refund? Also I used a adapter to get it from moles to 6 pin

