|"someone messed with the inside of my computer and unplugged the cpu fan with me knowing and it overheated and didnt work anymore"|
AMD CPUs (like Intel CPUs) have built-in thermal protection circuitry. It's almost impossible to overheat one to death. If it gets too hot, it will simply shutdown & won't work again until it cools.
"i am waiting to install the graphics card till this weekend when i can get an appropriate power supply"
Hopefully you know what to look for & choose a good one. Amperage is what's important, especially on the +12v rail. Get a brand name unit & plan on spending at least $50 unless a rebate's involved. For example:
"I tried taking out the RAM card and still no beeps"
Not a good sign.
HSF = heatsink/fan, in other words, the CPU cooler.