Dear sir/madam,
Thank you for contacting ASUS Customer Service.
My name is Penny. It's my pleasure to help you with your problem.
Please contact your dealer and let him test P5B Deluxe/WiFi-AP for you. If the problem still exists, please let him send the motherboard to ASUS RMA, we will test it and help you to resolve the problem. Sorry for any inconvenience.
If you have any problem, please refer FAQ(Frequently Asked Questions) or contact us again. We will try our best to help you.
http://support.asus.com/faq/faq.aspx?SLanguage=en-us
Sincerely,
Penny
ASUS Customer Service Center(China)