crashing pc

[joe1979]

is this a card problems please help

 i can start a game it will run for hours as soon as i turn the game off it crashes in less than five min.   i have tried every thing i no to do i no very little about pc cyber power employees seem to no even less than i do   i put a old gtx 550ti in and it stops so cyber power side it was a bad card and sent me a new 1060 -6gig and as soon as i put it in it 
started crashing  can put  old card in it run fine   what do i do next  please help!!
it three months old  ihave ran memory on both sticks and then one at a time  
motheboard gigabyte ax370m-ds3h-cf
chip set       ryzen  soc

southbridge  x370

bios  f22  
bios  date 03/15/2018 
 cpu  amd ryzen 52600

ram  team group inc  16 gig 

ssd wdc wds1 120 g2ggoa -oojh30 type ntfs 
hard drive
toshba  dto1aca 100   

 if I just new what part to by next