Hello everyone, this is my first post, happy to be here . Here are my PC details, followed by the problem description. AMD 64 X2 Dual-Core 3800+ CPU MSI K8N Neo4/SLi Platinum Motherboard 2 x UNB PC3200 DDR 512MB RAM GeForce 6600LE PCI-E 256MB WD SATA 80GB and MAXTOR SATA2 250GB On-board Creative SB Live! 24-bit Windows XP Professional SP2 (I can't recall my PSU but I think it's not the problem, hope I didn't forget anything else!) The past 2 weeks I've been getting 3 BSOD. The first was a KERNEL_STACK_INPAGE_ERROR 0x00000077 (0xC0000185, 0xC0000185, 0x00000000, 0x03685000) which happened only once between two of the following (second) BSOD. The second was a MACHINE_CHECK_EXCEPTION 0x0000009c (0x00000004, 0x805535F0, 0xB2000000, 0x00070F0F),Then, when I thought I had everything under control, I had the third and final BSOD BAD_POOL_CALLER 0x000000c2 (0x00000007, 0x00000CD4, 0x00000000, 0x86B3E64). As I said, BSOD1 appeared only once so I didn't think about it much. The 2nd, though, was a bit of a pain so I did some stuff. First, I used CHKDSK and PerfectDisk to check my OS hard disk, run MemTest and rid my PC of dust. Then I went and updated all MSI and NVIDIA drivers and, finally, after a lot of research, installed the newest sptd drivers after seeing the message "Driver detected an internal error in its data structures for ." in Event Viewer. Also, I have enough evidence to think this particular BSOD was linked to a few bad sectors showing on my OS hard disk as well as a bit of overheating despite the absence of over-clocking. As far as the 3d BSOD, I am at a loss. The only "clues" I have is of the last minidump that occured, which I checked with Debugging Tools for Windows and reads as follows: ChildEBP RetAddr Args to Child WARNING: Stack unwind information not available. Following frames may be wrong. f78da6c4 00000000 00000007 00000cd4 00000000 nt+0x6053a Help, anyone? I don't know what else to do and I can't stop feeling that my PC will restart any moment now after hitting me with yet another BSOD...Tell me if you need any more info. Thanks in advance, Evelyn. P.S. The Driver Verifier Manager showed I had to check drivers aspi32.sys, netdsl.sys, pavdrv51.sys, rspndr.sys. I don't know what to do about this, either!