I have messed up something on my computer. When I put my jump drive in, many of the files will not open correctly. I am using windows xp. I was told to reset folder options to default, this did not hellp. I was told to do run, cmd, sfc.exe /scannow and put my windows xp cd in. I did, it took about 45 minutes. It then wanted me to put in cd#2, professional something. I do not have 2 CD's, so I tried my microsoft office professional cd, and nothing has changed. I tried system restore to where it was working OK, no success. I do not know how to fix or use my flashdrive, when I put my flashdrive in another computer, it sometimes asks me what program I want to open it with. I do not know, as I have several pictures, powerpoints, and word documents on this flashdrive. I think it has to do with the settings on this computer, which is the computer I use all the time, and print from. Any suggestions?