Lately I've been running into quite a lot of BSODs, but my previous post (http://www.techspot.com/vb/topic56410.html) did not gave me any working solutions. It might have to do something with an overheating HDD, Everest shows that the temp of my FUJITSU MHS2060AT is 61 °C (142 °F). Fabric standards say operating temperature should be between 5 to 55 degrees. CPU is stable at 31 degrees (P4 Mobile, idle). These values do not change much over time, this bothers me, my sensor is not really updating frequently I guess. Did the mentioned memtest86+ (before start posting minidumps), passed 16 times, no failures. Tried the pagefile trick, same problems. After the BSOD and the dumping of memory, the laptop (Dell C840) restarts, fails in BIOS (latest version, A13) with the following message: Primary hard disk drive not found (HDD) Fixed optical drive not found (DVD) No bootable devices - Strike F1 to reboot (results in beep & same message), or F2 to go into settings (shows that HDD and DVD are not present). A hard reboot will result in a normal startup (as quickly as always, <30 sec) My knowledge of minidumps is very limited, could you please tell me what they suggest to be the problem? Any requested additional information will of course be supplied!