I had exactly the same problem, It fixed it went i made a copy of my drive, i.e. all the documents and settings, not program files. Wiped the whole drive...and then re-installed most things. So now I've just got windows and program files booting off one and everything else of the other. It made my computer about x10 faster. I know you might think, well you've cleared up more disk space of course it's going to be faster. But I had a brand new 250gb seagate hdd and it still was slow as sh*t, so I decided that disk space was not an issue for me.
Just make a backup copy of your raptor and blow everything away, except for windows. See if that works, it did for me.
Intel Core 2 Duo E6400 *Cooled with Thermaltake Mini-Typhoon* || Intel Quad Core Q6600
2gb Kingston 667 DDR2 RAM || 4gb Kingston 667Mhz DDR2 RAM
Gigabyte 512mb 8800GTS (683/2150)
250gb Seagate HDD (ATA133) 7200rpm/16mb cache || 750gb SATA2 Seagate HDD
ASUS MW221U 22" Widescreen 2ms.
Logitech Z-5500D 5.1 Speakers
Creative X-fi Xtreme Gamer Fatal1ty edition
3DMark06 Score = 8524 (1280x1024)