PC Specs: Windows XP SP3 32 bits 1 GB of DDR RAM (2 Samsung Memory Sticks, 512 MB each) Intel Pentium IV 2.00 Ghz ASUSTek P4PE2-X Motherboard American MegaTrends 1005.004 BIOS ATI Radeon 7000 Series (64 MB) My PC suddenly reboots without any prompt which started just a week ago. Upon opening Event Viewer, I saw a SaveDump that contains this message. I ran the chkdk module and TuneUp Disk Doctor which made the problem subside for a couple of days but then started recurring again. Can someone give me an advice on troubleshooting this problem? I have included the 5 latest mini dumps along with this post. Thanks a lot.