I just purchase a new abit kv7 mb, 2 Kingston 512mb RAM, and CPU AMD xp 3000+, and 160 Gb hard drive. I try a fresh install of windows xp sp2 and I keep getting the blue screen right after the system loading all the files from the Cd and try to start installing the Windows. (Blue screen shows up right after the DOS mode loading, and start the screen with the windows logo on the center and the install status on the left hand side.) After I found out the RAM is the problem, I exchange the RAM and I can install the Windows without any problem. However, my windows will suddenly shut down and reboot at a random time. Sometime it runs great for 4 or 5 days with normal useful (no installation of program or running heavy program) and reboot suddenly. Then it will keep reboot every time I type in the password and login. I have to login as another user, then do a normal reboot and then it will run fine. I try looking at the CPU temp and it is just about 60 deg C at the time of reboot. Then I run the Memtest86 again and I get error reported on test#7. However, when I install the RAM on teh different system and run the test. It passes all the test without any problem. I have changed the video card to see if it helps and no luck. I also try unplug/disable all the other card but still not able to fix the problem. I suspect this is an motherboard problem but I don't know how to confirm it. Do you know what test # 7 on the memtest86 means to the system and the RAM? Thanks a lot.