For some reason my PC (HP Mini) with Win7 Pro can't seem to find my Tattoo when I attach it with usb, which means I can't transfer my photos or upload mp3-files. This has worked on other PC's before. Also, the HTC Sync doesn't work. Yes, I've reinstalled it and disabled the anit-virus program when I did this but no difference. The logo stays grey. Getting seriusly frustrated!