Crucial C300 and Asus U3S6 Problem.

After much effort I got my new Crucial C300 128GB drive to boot when connected to the Asus U3S6 card (and it's wicked fast). Problem is, if I have my SATA II Samsung F3 plugged in, the PC won't boot. I've tried the Samsung both in the U3S6 and on board. The C300 is definately first in the boot order and will boot as long as the Samsung is unplugged. The drives are running in AHCI mode. BIOS flashed to F9. The U3S6 has the latest drivers & controllers. The C300 has the latest firmware. I'm completely lost. It's a pain to have to unplug the F3 before I reboot.
Any ideas?
I know this isn't a Windows 7 problem but if I'm gonna get help anywhere it's probably here

I would switch to IDE first. That may help. The maker of my SSD prefers that I run it in IDE. It's worth a try.

Sounds like you have tried everything else I would recommend. Good luck

Solved! I left it set to AHCI, as recommended by Crucial, but set it to IDE mode instead of SATA. I then had to switch SATA ports on the card (ie:made sure the C300 was in port 0). I plugged the F3 into port 1 on the card and it now boots!

tw33k said:

Solved! I left it set to AHCI, as recommended by Crucial, but set it to IDE mode instead of SATA. I then had to switch SATA ports on the card (ie:made sure the C300 was in port 0). I plugged the F3 into port 1 on the card and it now boots!

Sweet! Glad to hear you fixed it. Have a good one.