Recently I changed my video card to a new Sapphire Radeon 9800 Pro Atlantis (fanless cooling).
The card needs power supply, so I plugged it to one spare power cable.
From that moment on, randomly, the HDD is not recognized at boot.
First of all I tried a different power cable (the one I choosed had problems?). The problem disappeared, but after 5/10 cold reboots it was still there.
Thinking at a power supply failure (no sufficient power) I unplugged some unnecessary devices (sound card, usb devices). The problem arises again.
Lately, when the HDD is not recognized at boot, I turn off and the on again the computer and finally the drive is recognized.
1. Is the HDD dying and the problem is not related to the new video card?
2. Is the video card conflicting with the HDD?
3. Is it a power supply problem?
4. Can it be a temperature problem (since it's fanless, I guess the temperature inside is getting hot, but I'm probing it and it seems that it never goes beyond 40'Celsius).