Thank you for responding my question.:)
But the problem is i cant get in to the bios, so i have to do ROG USB flashback. i did downloaded the new version bios of the crosshair v formula which is 1703 with the ROM format. i unzipped and copy to my USB strike then plus in to the ROG USB port, but the motherboard doesnt load up the bios. then i had read and follow the introfuction of Asus ROG USB Flashback on the this page.
http://rog.asus.com/forum/showthread.php?1142-How-to-use-ASUS-ROG-USB-BIOS-FlashbackBut it still doesnt work for me, and then i did search more information about ROG USB flashback, then i find out the problem is the motherbaord cannot detect .ROM format. and it also say i have to convert it to .cap format and rename it.
http://event.asus.com/2012/mb/USB_BIOS_Flashback_GUIDE/but on my laptop i cant Do this..................
i did try to use another AMD processor which is AMD sempron 145 2.8Ghz to boot up the system but it still not working to get in to the bios
i checked the motherboard should support for this CPU on the Asus crosshair v formula website.
Also i did bought the new bios chip to update the bios but it still doesnt work. Now i dont know what to do................:(