I have 4x R9 280x GPU's. Been mining with them for about 8 weeks now, no issues. Hash rates on all 4 cards around 725kh/s. I decided to buy an SSD drive (I use the pc that mines as my main pc also). I installed Windows 7, AMD 13.11 drivers (using the same install file I used on the previous hdd), copied the cgminer folder, including the .bat files to start it. When I run miner all I get is hw errors. I've tried booting up on the old hdd and mining, works fine. Any ideas as to what my problem might be?