gigabyte answered to my question for the bad flash of f5 18/07 killer
bios:
Dear Sir,
Thank you for your kindly mail and inquiry. About the issue you mentioned, please follow the steps below taking off the on-board battery to leak voltage to clear
CMOS then try again later.
1) Turn off power.
2) Remove the power cord from MB.
3) Take out the battery gently and put it aside for about 10 minutes or longer. (Or you can use a metal object to connect the two pins in the battery holder to make them short-circuited.)
4) Re-insert the battery to the battery holder.
5) Connect power cord to MB again and turn on power.
6) Press DEL to enter
BIOS and load fail-safe defaults setting.
7) Save changes and reboot the system.
On the other hand, attached is the final version
BIOS for the motherboard. You should be able to update it by using Q-flash utility and try again later. After
bios updating, please do not forget to load
BIOS fail-safe default setting.
Unfortunately, if the problem still remains, we suggest you contact your retailer/supplier, or, contact with local distributor for checking and repairing. We are really sorry for the inconvenience you have with our product.
At last, if you still have any further suggestion about our products/service, please do not hesitate to contact with us. We will try our best to help you ASAP.
******** Thank you for supporting Gigabyte products ***********
well i think they are driving me crazy with their answer.......no more gigabyte products for me....i think msi are value for money boards!so...back to msi or asus or abit but never again gigabyte....