I purchased (did not build) a new computer about a month ago. You can see it here:
http://www.bestbuy.com/site/Lenovo+-+Id ... &cp=1&lp=1
I purchased a fairly meaty GPU for it last week and received it today, see it here:
http://www.amazon.com/gp/product/B004FPYJFI
I popped it in and it made a very loud, high pitched whistling type noise. After some research I found that my power supply isn't powerful enough and is probably the reason for the noise (if I'm wrong let me know). I think I have a 300w PSU and the GPU needs a 500w or greater power supply with two 75w 6-pin PCI Express power connectors.
I need some help finding a new power supply that will work with my system AND the GPU I want to install. Any direction would be most appreciated. Thank you.

