Hello guys, 3 days ago i upgraded my pc from a xp3000+ and a asrock k7s41gs and 1gb of ram 400mhz, to the system in my profile. Before upgrade, i bought a new hdd, a seagate 160gb 8mb buffer, model st3160815a. i installed it on my old system and was fine, very fine. But with the new system, my two hdd performs strange, taking 2 or so seconds to enter in any folder, and pressing back button takes another 2 or so seconds.. my 2 hdd are IDE, not sata yet. the main hdd is the new, and the second is a 120gb 2mb buffer, a bit old, but always workerd like a dream. enter on some folder of the second hdd(old), takes me 10 seconds, like my Fs2004 addons folder(32gb) and this never had this problem.. as i come from a old technology and mobo, i dont know how tweak my m2n-e sli, im sure is a good mobo, but i dont know exactly what to touch. All my games works very fine in fps, no problems. but in rfactor(racing game) sometimes my hdd works when loading textures, then is fine, again never had this problem even with my old system!. I upgraded the mobo bios to the latest, i have all the latest nforce 500 drivers, defraged the 2 hdds... same problem. some settings in bios are AUTO, like PIO mode(What is this? :approval: ) and UDM5 mode 5. Some help to solve this problem? well, is not a big problem at all, but is stressed when im working some hours... Main HDD are on the primary IDE channel alone, and my second HDD are on the secondary ide channel with my DVD. hdd master, dvd slave. Well, thanks gurus!