just got a x700 to install in my new intel 915 board. the card is pci express. most of the time the card works great, but every so often the card blinks off and on, screen goes black and then comes back. there doesn't seem to be any reason for it, not under load at the times, so it seems. sometimes it's good, other times, it blinks on and off like crazy. really anoying and want to figure this out beore return exchange policy on card expires.