So, I know I'm taking a shot in the dark for getting an awnser here, but I need some advice on upgrading a prebuilt pc I bought, I have an HP Envy 700 that came with an Intel i7-4790, 8gb of ram, a 1tb hdd, AMD Radeon R7 240 graphics card, and a 460watt psu. and I really really want to upgrade some things, first of all, I would like to upgrade my gfx card, probably to a GTX 750 Ti, I am aware I need to upgrade my psu, and I already have a Corsair GS500, here's my first question, can I run that graphics card on that psu? I heard things about amps and voltages and stuff but I'm not fond of that kind of stuff, so I'm concerned about putting new stuff in. My other question is, Can someone explain to me about motherboard shortages, I am concerned that by upgrading this stuff and future parts, that this may happen, what precautions do I take to make sure I don't do this by adding future parts? Unfortunetly, I can't upgrade my motherboard so I am Stuck on that part, and I'm trying to upgrade as much as I can without shorting it out. I hope this all makes sense and I Hope someone can help me out, I would appreciate alot.