Try installing in safemode or do a selective startup use msconfig choose selective startup disable load startup items - then go to the services tab and check hide all microsoft services then click disable all - reboot with just the essential stuff
Intel Pentium E2160 clocked to 2.3- Gigabyte 945GCM-S2C- 2 x 2048 DDR2- 160gb WD sata, 640gb WD sata and 250 gb maxtor external hd -Vista Ultimate - 2 20x's dual layer Dvd burner one with lightscribe- 9 in 1 card reader - AverMedia UltraTV 1500 MCE TV card and Radeon HD 2600 Pro 512mb in a Antec 300 iPhone Ping iD fortis4eva