my motherboard is ASUS P5N32-SLI plus with mod ver.1401 (work well until today) My PC was crash & restart then said CMOS checksum error so I try many times to load default setting & clear bios by switch jumper & remove battery but no luck it will be freeze at bios setting after 10 sec. then it's cant boot anymore. so I have some question please advice. I'm just a rookie I hope u understand. 1.what exactly is Phoenix Award? I mean I use Bios mod tools I choose Phoenix mod but it's said it's not then I use Award I'm I right? 2.I use Award mod tools for mod by myself with bios ver.1502 it's simply & easy to use & pass all seem well & then I flash but the bios still freeze if I skip then got blue screen when window start logo. what wrong with this? (I use to mod P5K-pl-AM & working like charm before) 3.Between the old bios & new are necessary or not to put same slic & another files in mod tools? I'm afraid I put different certificate file so now cant boot. 4.I flash by EZflash tools in bios but now it freeze every time did u have another tools to fix this thing? How to use? 5.so if it's a dead-end can anybody help me send working bios slic 2.1 for ASUS P5N32-SLI plus ver. 1502 DELL or ASUS it's will be ok. the original bios is here put this to web.. mediafire.com/?h85h1wevbns79n0 (sorry I cant direct link now) or ASUS website 6.did we can rollback bios to the older verion? i try but it said can not. I have so how to flash older verion? please advice. thank you for all kindness now i'm desperate sorry for my bad english)