I have new computer:
MOBO - ASUS Sabertooth 990FX
Graph. - ASUS EAH6950 DCII/2DI4S/2GD5, 2GB DDR5, 2×DVI, 4×DP, PCI-Express
Proc. - AMD PHENOM II 1100T
RAM - ADATA 2x4GB DDR3 1600 MHz CL9
SSD Disk - ADATA SSD S510 120GB SATA3/600, MLC
Everything was perfect (for two weeks) until I connected HDD 2 TB Western Digital WD20EARS.
After plugging this HDD to SATA6g (SATA3), I cannot even get to BIOS.
After JMB screen everything went dark and I cannot see even POST screen. On motherboard one LED diod lights until I shut down the computer - BOOT DEVICE LED.
JMB did not find any disk until I plugged this to SATA3g - SATAII connector. But problem still remains...