Question GPU replacement?

Mar 25, 2019
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I honestly didn't want to resort to posting on forums, but if anyone can help me out I'd really appreciate it. Here's the situation, I bought a iBuyPower gaming desktop back in December for around nine hundred bucks. Other than a couple of issues with the audio it seemed to be working fine, but now whenever I'm playing a game I hear a strange rattling noise coming from near the bottom of the PC which is where the video card/fan is located. I've tried cleaning the inside of the computer and installing updated drivers with no luck. I don't know a ton about computers so forgive me if I sound a little ignorant. The sound only comes occasionally and I should emphasize it only happens when I'm playing games. If anybody could help me out, again I'd appreciate it! Here are my specs:
Model Number: Trace940
Processor: intel core i7-8700 16GB memory
1TB hard drive (1000GB capacity) and 120GB SSD
Graphics: Nvidia GeForce GTX 1060