internal hard drive not detect
1. flash Question mark folder at startup. 2. No problem in HD.(test several hdd and orginal hd work on other pc and macs) 3. In disk utility the internal hard drive does not appear. 4. However, the USB port it works normally therefore external drive boot compeletly 4. CD-ROM also gives boot. 5. FireWire target disk mode works good 6. i change south chip on board but steel not detect sata hdd
plzzzzzzzzz help me!!!i'm so confussed!