Z77 extreme 4 RAID question

[Damien Marsh]

hello i recently finish new build

so far here is my pc spec
intel i5 2310 quad core
asrock Z77 extreme 4 motherboard
16gb ddr3 1600 patriot (4x4gb)
2 x Mushkin Enhanced Chronos MKNSSDCR90GB 2.5" 90GB
western digital 160gb9leftover from old build)
logicisky 480watts psu

i get riad installion guide from asrock and i followed it to the letter. i put both ssd to sata 3 plug and instal window 7 x64
all go well unil i notice that bio see both ssd but in window 7 control panel only one ssd show up. and guide stated to reboot the computer and wait for crtl I to go in raid to make new raid. but that never happen as when my computer boot it go straigh to window 7 logo. i assume that don't supposed to be happen before raid. i check that sata mode is set to in RAID mode. but i still don't see RAID info on screen. so can you help me to get correct info of what to do? do i need reintsal window 7 again or whatever. i prefer video guide but i will be happy with paper with step by step instruction. i appreciate your help and hope you can help me

btw sometime ssd disconnect from my system and i assume it because of power loss form psu. i does plan to upgrade psu soon to accommodate for 2 of geforce 250 gts in sli mode

[Acebmxer]

You are trying to raid your 2 ssd's in raid0? You need to create the array before you install windows. Once the array is created windows should see 1 single 180GB drive (2x90gb).

Make both ssd's are on the same sata controller.