Question Games crashing

Apr 16, 2019
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I got my gaming PC about 3 years it’s a micro atx motherboard with 8gbr ddr3 ram, R7 370,600 watt power supply and a 3.5ghz I5. It ran all games fine on medium settings previously. About a week ago games starting crashing and now a week on I can hardly load into a game it has got progressively worse. Any ideas on how to fix this ??