I've never heard of an Alcazar PSU, so I can't vouch for it. Look on the nameplate and see what amperage (A) the +12V rail(s) offers. Off the top of my head, I think the GTX 460 requires 13 -14 amps. Maybe someone can correct that if I'm wrong. Get yourself another 2 x Molex to PCIe adaptor and try to connect each PCIe power cable to a different Molex cable string... if your PSU's +12V rail(s) allow that amount of amperage.
If not, and better yet, upgrade to a new PSU.
Remember: you have to have both 6-pin connectors on the card powered.
special thanks cultchc, thanks to your recommendation i could overpass the issue, oh and i guess 25 amps is enough for the card, or maybe not? im not sure heh
oh well, thank you kindly once more for your time and patience