you might want to run a windows restore/recovery... you might be missing the install.msi, or msiexec.something, or some other system install executable/service.
you could try "sfc /scannow" (from a command prompt) if you have the OS data stored localy
Just to name a few...
Case:NZXT Trinity Silver PSU:Apevia Aspire 500W UV Green Motherboard:Asus A8N-SLI CPU:AMD Athlon 64 3500 CPU Cooler:Zalman CNPS7700-Cu Video:2x eVga nVidia GeForce 6800XT (256MB DDR) RAM:2Gig (4x512 Corsair TwinX dual channel) HDD:160Gig Seagate Barracuda SATA, 200Gig Maxtor SATA III CD/DVD:LG DVD ROM, NEC 16XDVD+-RW
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