The computer was working perfectly yes, but after i added the new card, it only worked for a day. After the shutdown, it didn't take up the picture. Although, when i turned on my pc, everything was working( heard the starting sounds and all). But there was no picture. Bought this new PSU too cause i thought it was the lack of power that didn't let this card work, but turned out that was not the problem. Now i'm left with good pieces of computer components and still no picture. I't cant be the PSU nor processor problem. The problem seems to be in motherboard or card i think.