mikeneedshelp

i recently bought a Gateway - Desktop / Intel® Core™ i5 Processor / 8GB Memory / 1TB Hard Drive Towers Only - BestBuy and upgraded the graphics card to a radeon 5450 2GB DDR3 so i would be able to play bad company 2 on max and also to play battlefield 3. However after i installed it and tried to play bad company 2 on max i was extremely disappointed that i was watching a slide show. the only way i can run bad company 2 is to run it on low which is truly terrible. i got so frustrated that i stopped trying to run games in fear that i might hurt the computer internals. i think the problem might be that i don't have sufficient power going to it. if someone could help me out by checking into this problem that would be great. or if they could find a different problem that would also be great. ps. what does insufficient power supply do and if that's the problem what should i do to fix it. Also im a little concerned about my graphics card since it didnt come with a fan, should i be worried about this and return it?

i recently bought a Gateway - Desktop / Intel® Core™ i5 Processor / 8GB Memory / 1TB Hard Drive http://www.bestbuy.com/site/Gateway+-+Desktop+/+Intel%26%23174%3B+Core%26%23153%3B+i5+Processor+/+8GB+Memory+/+1TB+Hard+Drive/2632043.p?id=1218341072045&skuId=2632043 and i found out that it came with an awful graphics card. I enjoy playing games and I'm really looking forward to Battlefield 3. If anyone could recommend a graphics card that can play battlefield 3 on med-high settings that would be great. A card around $120 :confused:would be great. Also the graphics card has to be compatible with the PC. If anyone could recommend a site to buy graphics cards from would also be appreciated. Battlefield 3 predicted recommended specs: Hard Drive Space: 15 GB for disc version or 10 GB for digital version OS: Windows 7 64-bit Processor: Quad-core Intel or AMD CPURAM 4GB Video Card: DirectX 11 Nvidia or AMD ATI card, GeForce GTX 460, Radeon Radeon HD 6850