3 month ago i have normal pc i never seen any problem in. After im a buy new gpu Asrock a380 challenger. İ go my pc repair shop for change gpu because i dont want do this alone. He change it but said this card is broken and im back to use main old pc parts. What happened after this if i try any game my pc locking up, screen freeze, keyboard not working. İm try again remove my old gpu but same, try change power supply but dosen't work anything. What is my pc's problem can be and i how find this? Please help me guys im really need your help.