Hello,\n\nI'm a techneophyte who desperately seeks help to find SP1 in some format that may be run directly from USB flash drives. My ancient Sony VAIO PC was upgraded to Win 7 Pro years ago but had to go back to its preinstalled OS when it suddenly failed to bootup for weeks before then. I've learned you can't upgrade to Win 7 Pro again with no Vista SP. Also, CD-ROM drive doesn't work, so ISO can't be burned - just USB. What software is best option and Vista-compatible for this task? Where to download SP1 for Vista?\n\nThanks in advance!