Hello I've been browsing these forums for a few days soaking up information and I have a few questions. I have 2 Gigabyte 5970 in crossfire. I'm starting to regret buying Gigabyte because one is not working... well sort of. It works fine with the stock cooler on it, but when I put the water block on it stops working. Windows will boot but withing a min or two I get artifacts/lockup or just lockup. I'm using the bitspower black freezer for the 5970, I noticed it does not have the same cut for the CPL-2-50 as the EK block that was causing problems. Mine is all flat. I don't understand why one is working with the water block and the other isn't. I've tried swapping PCI-E slots, water blocks, and testing the cards alone, but it's still the same card acting up every time. Any suggestion??? I wanted to update the BIOS but I e-mailed Gigabyte and they don't have an updated BIOS yet. I've noticed that just about all the 5970s loo the same, so my next question is would it be ok if I flash my card with an updated BIOS from another company? Thanks in advance for any help!!!