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Here are my system specs:
Asus K8N Socket 754 MicroATX Motherboard
Athlon 64 2.4ghz
1 gig patriot ram DDR 400
Samsung Ultra ATA 160 GIG Hard Drive
Maxtor 300 GIG SATA
DVD RW and CD ROM
6600GT & 6800 Ultra
Antec Smart Power 400 Watt PSU
Problems started when I replaced the 6600GT with the 6800 Ultra. I removed the drivers, shut the system down, replaced the cards, powered it up, and began to install the driver. About 30 seconds into the driver installation, the whole system froze. Now, it will lock up within 20 seconds of logging into XP. Also, the motherboard will no longer recognize the optical drives. The components came from a HP A810N desktop that was given to me. I took everything out of the HP case and put it into a new case. It has worked flawlessly for over a year until yesterday. I have tried taking all the GFX cards out, and hooking it up to the onboard video slot, but the problems remain.
Asus K8N Socket 754 MicroATX Motherboard
Athlon 64 2.4ghz
1 gig patriot ram DDR 400
Samsung Ultra ATA 160 GIG Hard Drive
Maxtor 300 GIG SATA
DVD RW and CD ROM
6600GT & 6800 Ultra
Antec Smart Power 400 Watt PSU
Problems started when I replaced the 6600GT with the 6800 Ultra. I removed the drivers, shut the system down, replaced the cards, powered it up, and began to install the driver. About 30 seconds into the driver installation, the whole system froze. Now, it will lock up within 20 seconds of logging into XP. Also, the motherboard will no longer recognize the optical drives. The components came from a HP A810N desktop that was given to me. I took everything out of the HP case and put it into a new case. It has worked flawlessly for over a year until yesterday. I have tried taking all the GFX cards out, and hooking it up to the onboard video slot, but the problems remain.