Hello -- I'm currently working on a client's computer -- it's identical to the one in my sig save she has a 5900FX card. EDIT: (She has onboard sound, not an audigy card, and has a plextor cdrw, no dvdrw) She just noticed yesterday that it began giving blue-screen of death messages with different errors. When I began working on it, sometimes it was ntfs.sys, another time it was a usb***.sys, etc. I ran it through the basics steps; spyware, virus removal etc. Some spyware was found, and I got rid of it but the errors persisted. I re-installed Windows after some more blue-screen errors. It STILL gives me blue-screen errors and sometimes just reboots without notice or errors. I unchecked "auto restart" on system failure without success. I ran the memory through memtest thinking it was it since it gave me memory allocations in each error message but it passed 100%. I ran stinger to see if a blaster worm or variant was lingering and nothing was found. I'm really at a loss of what to do! My last step is a complete format and reinstall but that is the last resort. Any thoughts?