I built Steve Walton's 8/2014 "Budget Box" with the Kaveri A8-7600 and the recommended motherboard, memory, SSD, optical drive, case, and monitor. No overclocking. Beautiful to look at. The very first time I powered up I was able to install Windows 7 64-bit, but it crashed during the giant Windows Update process and would not reboot. Assuming that the installation was corrupted by this, I tried re-installing Windows 7, and was able to reformat the drive but it crashed during the "completing installation" step. Now I can no longer boot from the Windows 7 CD at all; at the "Starting Windows" screen it bluescreens 0x3b, 0x50, or 0x7e + ACPI.sys. I am able to boot Hirens 15.2 from CD or USB on this build, so I can run tests. Below are my fault isolation attempts: - memtest86+ each stick, each slot, each overnight. No errors. - prime95 overnight. No errors. - chkdsk /r on the SSD (attached as a data drive to a working PC). No errors found. - Tried with SATA configured as IDE in the BIOS, no effect. - Swapped out PSU and memory from a working PC. No effect. Attached working graphics card, no effect. - Tried a spare Windows 7 installation CD, then a Windows 7 installation USB, no effect. - Stripped motherboard of everything non-essential, no effect. - Replaced motherboard, same model, no effect. Re-tested all of the above, no component errors, same bluescreens. - Successfully installed Windows 7 on the SSD using another PC, then moved the SSD to the new build -- same bluescreens trying to boot from it. Attached are the bluescreens. A big thank you in advance to anyone who can help.