My Adata 8gb sdhc class 6 card was fried with the 2007 updated OS. I have tried for two days, to have my Win XP card reader disk check for errors and also re-format. All I seem to get is the i/o error response. I have even tried using several third party disk recovery programs made for flash media, and none of them are able to access the card. Most times these programs freeze trying to access it. I don't care about what was on the card, it is all backed up on my pc. I just want my card reformatted, but it seems unrepairable.