i have an old pc . i have installed a graphic card . it working fine when i newly format my pc but untill i shut down & turn power off . after i switch on my pc back it stuck on loading screen , sometimes on bios flash screen ,Sometimes it boot up then my pc freeze .when i removed graphic card it boot up & works fine . this problem is haunting me for months . i don't know which parts in my pc damaged. is it graphic card or motherboard or ram or cpu or hdd . i'm lost here..