Fan motor wouldn't turn on... Then screws fell out!

Just got this air purifier and could tell something was wrong. When I moved the box I could hear something loose rattling around. I managed to get two nuts and a screw to shake out of the purifier before starting it. Then after I turned it on the fan wouldnt run and it smelled funny. Unplugged it and shook it upside down and then another screw fell out. After plugging it back in and turning it on the fan worked. Glad I found that before it caught on fire! I hope it works but I'm not sure where these screws go!

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