Hello all! I have an HP G62 340US laptop upgraded to Win 7 Ultimate (runs very fast - normally). I also bought a brand new 1.5 TB desktop drive (Seagate) from Fry's Electronics @ San Diego. When I connected the two to back up my stuff (the first time the desktop drives been used), me computer complied for the first 20 GB's, and then everything slowed down to a crawl. I disconnected the DD (desktop drive), and restarted the computer. It was still extremely sluggish even w/out the DD attached. I've run a virus scan (paid AVG), I've fixed registry errors (paid AVG Tuneup), and nothing helps.