ok, I just installed 2 new WD Caviar 160gb SATA2 HDD's in my computer, The computer recognized them right away, i formated the first quick format and there was no problems took like 3 sec. The second one on the other had when i went and created logical drive, again quick format NTFS and the HDD freezes up my computer have done it 9 times now tinkering with settings and can not figure it out, Please help Here is the comp Specs. Pentium 4 3.2 HT 800mhz FSB 2mb L2cache Gigabyte GA8N-SLI-Pro MB 2X 1gb PQI 667mhz pc5400 ram 2X XFX 6600GT SLI enabled video card in SLI config 600 Watt Seasonic Power Supply 2X 160 WD Caviar SATA2 HDD Thermaltake Shark Case Black Aluminum I hope this helps you guys alot Thank you for your time, Thomas Retzlaff