If the Blue Screen of Death (BSOD) is caused by the iastor.sys, please try to update this driver by removing previous version and downloading the latest one compatible for your computer chipset:
If you're having a "7B" BSOD then it probably has to do with the "bitness" of the driver. There's a quirky behavior with Intel storage drivers. The .inf files are architecture non-specific, but the .sys files are obviously very different. This means, if the OS is x86 and it sees the x64 driver first, it will accept the driver, but the .sys file will cause the boot device to be inaccessible.
I suggest you manually filter the driver package down to the specific OS and bitness that you need. Do this with Universal Extractor.
Here is the info from my event log, or are you looking for info from the dump file? if so, you
need to be really specific for me...
BugcheckCode 126 BugcheckParameter1 0xffffffffc0000005 BugcheckParameter2 0xfffff880012835f3 BugcheckParameter3 0xfffff88003b2b7f8 BugcheckParameter4 0xfffff88003b2b050 SleepInProgress false PowerButtonTimestamp 0
I"ve been chasing this with various helpful people for over a week now. It occurs
anytime, sometimes 3x day, other times, only 1x 18 hours. Nothing specific I
can tell is happening at the same time.