CF usually indicates that the CPU fails.
1, the code FF, 00, C0, D0, CF, F1, or nothing indicates that the CPU did not pass.
2. Codes C1, C6, C3, D3, D4, D6, D8, B0, A7, E1 indicate memory however.
3, code 24, 25, 26, 01, 0A, 0B, 2A, 2B, 31 indicates that the graphics card is not.
4, code C1, C6, C3, 01, 02 This combined loop jump is mostly I\/0 bad or brush BIOS.