Hi everyone, I have a serious problem. Lately I've changed lots of computer parts: motherboard, processor, RAM and graphic card. They are all brand new (my specs are below). However, after 15 minutes, sometimes half an hour of intensive gaming (or even Windows-based work, like copying large files) I'm getting this STOP: 0x0000007F error. I entered "My Computer", "Manage", "Event Viewer", "System". There is no log tagged "System Error", but the STOP error is still showing up. I made some screenshots for you to analyse them, maybe they can tell you something about the nature of my problem- is it hardware or software related? This is first error: This is a different one, it popped up just today: This is what I have: CPU: Pentium 4 LGA755 3,0 GHz; 800MHz fsb; 1MB cache (I bought it used, but it's working well) CPU cooling: Ninja Scythe Plus ans Arctic Silver 5 termal paste Motherboard: Gigabyte GA-965P-S3 (brand new) RAM: Goodram 667MHz DDR2 2x512MB CL5 dual channel (paired to work in dual channel, brand new) Graphic card: Galaxy 7300GT 256MB, DDR3 Premium with Zalman cooling (brand new) Power Supply: Antec 450W (brand new) HDD: IDE 40 GB Seagate and SATA WD 200GB soundcard: some Realtek mobo integrated one DVD Recorder: LG multisystem I have tested my RAM with this testRAM utility and it showed 10 errors within a 30-minute test. This is how a log-file from this operation looks like: Code: Started 14:11:38 memory: 727 of 730 Mb, method: 1, priority: normal, work threads: 1, errstop: 0, hrsstop: 0 Error 1, out of 738 cycles, (650% checked) - AD9B8279 vs 329B8279 (9F000000), 14:30:49 Error 2, out of 1249 cycles, (1100% checked) - FF3CC8B9 vs FF3CC5A5 (00000D1C), 14:44:07 Error 3, out of 1249 cycles, (1100% checked) - BF37773D vs BF37466A (00003157), 14:44:07 Error 4, out of 1249 cycles, (1100% checked) - BF2282E7 vs BF227995 (0000FB72), 14:44:07 Error 5, out of 1249 cycles, (1100% checked) - FF12A69A vs FF122A2E (00008CB4), 14:44:07 Error 6, out of 1249 cycles, (1100% checked) - DF05129F vs DF057B08 (00006997), 14:44:07 Error 7, out of 1249 cycles, (1100% checked) - FF18407A vs FF18BF1E (0000FF64), 14:44:07 Error 8, out of 1249 cycles, (1100% checked) - BF5F223F vs BF5F9A7F (0000B840), 14:44:07 Error 9, out of 1249 cycles, (1100% checked) - 9F0B33E6 vs 9F0BBB12 (000088F4), 14:44:07 Error 10, out of 1256 cycles, (1106% checked) - FF8ED7FF vs FF8E223F (0000F5C0), 14:44:19 Finished 14:44:37 (reason: terminated by user) What does these results tell you? Now here you can sneak a peek at how my BIOS looks like and if there's anything wrong with it. Basically I didn't change anything apart from S.M.A.R.T. HDD option, so I think everything should have [Auto] or default values: Advanced BIOS features: http://img208.imageshack.us/img208/5199/advancedbiosfeaturesdy7.jpg Power Management: http://img183.imageshack.us/img183/7059/powermanagementcw8.jpg Intelligent Tweaker: http://img214.imageshack.us/img214/1046/tweakerkx3.jpg Integrated Peripherals: http://img208.imageshack.us/img208/9669/integratedperipheralsph6.jpg PC Health: http://img208.imageshack.us/img208/5880/pchealthun6.jpg Please help me, is there anything I can do? I'm really sick of this annoying error I though the problem is RAM-related so I tried to change some timings, but I couldn't find how to do it from the BIOS level EDIT: Oh, I forgot: I would have attached some minidump files, but after enabling this option, believe it or not, there are no files in the Windows/Minidump folder, there's even no such folder (I can see all the system and hidden stuff though), but the crashes are still there. I'm perplexed.