Hello people, This is one of the most useful XP forums I've seen. I hope someone can help me analyze the minidumps I sent. I am completely out of ideas. :dead: PC: AMD Athlon XP 2000+ ABIT KG7-Raid board Disks attached to RAID channels (single disks, no raid mode) 2x256 MB RAM ASUS V7100 Pro Video card (=GF4 mx200) Windows XP SP1 (SP2 installation BSOD's on me when starting with unpacking files) This is the situation: After a disk crash (Parents' PC) I repaired the original disk and installed a new disk as primary boot disk. I first repaired the original XP installation, but: I kept and keep getting the PAGE_FAULT_IN_NONPAGED_AREA BSOD's which point at ntfs.sys, stop code 0x50. They happen every time I try to start any significant action (in my case, windows updates) I already ran memtest, and found errors in test 5 (=stress test). I swapped memory modules but they both acted the same, so I concluded that bios timings were too tight. I relaxed the memory timings and errors are now gone. I completely reinstalled the PC (XP SP1) and everything went ok. Installed many drivers, and things went still ok. Then I installed DirectX9 and after this, same crashes again. It points at the video card but still.. can be a coincidence. The BSOD always looks the same so analysis should be easy. Would someone be so kind to check my attached minidump files? Thank you very much.. I've been working on this for days now, getting really tired about it.