Question GPU stops working after loading up graphics intense games

Aug 4, 2020
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My build is just 6 months old, I was playing ac origins and a burning smell came out and the screen turned white and froze. After restarting, the pc worked fine but it froze again with a different screen colour(different colours everytime) when I loaded up ac origins. I have no problem playing minecraft or using low GPU usage apps but the moment I load heavy games the GPU stops and screen freezes. My GPU is gigabyte gtx 1050 ti windforce oc and psu is 450 watts. I think it's either GPU or psu problem. Please what should I do? Any suggestion will be appreciated. Thank you.
 
Aug 4, 2020
2
0
10
make and model of this 450w psu?
full system spec?
My spec:
Rysen 5 1600 processor
Gigabyte Gtx 1050ti 4gb windforce oc
Msi A320m a pro max motherboard
Corsair vengeance 1x8gb ram

My psu is the only thing thats outdated in the build, it's 8 years old and it's not even a popular brand, if you still want to know it's detail I would tell you but I have to open the pc case again.