ok here is a pc for 500$
CPU:http://www.amazon.com/AMD-FD6300WMHKBOX-FX-6300-6-Core-Processor/dp/B009O7YORK/ref=sr_1_1?s=pc&ie=UTF8&qid=1453301362&sr=1-1&keywords=fx+6300
GPU:http://www.amazon.com/MSI-GTX-950-2GD5T-OC/dp/B0147ELTUO/ref=sr_1_10?s=pc&ie=UTF8&qid=1453300825&sr=1-10&keywords=gtx+950
MOBO:http://www.amazon.com/ASUS-Micro-Motherboard-M5A78L-M-USB3/dp/B00DQO9L1Q/ref=sr_1_7?s=pc&ie=UTF8&qid=1453301362&sr=1-7&keywords=fx+6300
RAM:http:http://www.amazon.com/Kingston-HyperX-FURY-1600MHz-DDR3/dp/B00J8E92R6/ref=sr_1_6?s=pc&ie=UTF8&qid=1453301935&sr=1-6&keywords=hyper+x+blu+4GB
storage:http://www.amazon.com/Seagate-Pipeline-3-5-Inch-Internal-ST3500312CS/dp/B002CMOH26/ref=sr_1_1?s=pc&ie=UTF8&qid=1453301777&sr=1-1&keywords=hd+500
PSU:http://www.amazon.com/EVGA-Continuous-Warranty-Supply-100-W1-0500-KR/dp/B00H33SFJU/ref=sr_1_1?s=pc&ie=UTF8&qid=1453301134&sr=1-1&keywords=500w+psu
Case:http://www.amazon.com/Rosewill-Micro-Tower-Computer-SRM-01/dp/B00ZPWOA6I/ref=sr_1_7?s=pc&ie=UTF8&qid=1453301159&sr=1-7&keywords=rosewill+case&refinements=p_36%3A1253504011
TOTAL COST:436 without OS
😀 you can find windows keys on reddit for 10 dollars or a little bit more, or just use linux ,it's free and opensource
😀 don't forget best answer
😀