Update:
After uninstalling NOD32 AV, I tried installing BitDefender. BSOD, same error:
Stop 0x00000101 "A clock interrupt was not received on a secondary processor within the allocated time interval"
So, this made me curious and I decided to update my AI Suite software (as per Marcos' suggestion.) The newer version from Feb 2015 got halfway through and blew up on the USB driver install - BSOD again, this time a different error that disappeared too quickly for me to see it. Booted to Safe Mode, windows logs were not helpful so I tried rebooting to Normal mode. BSOD again, this time showing "asmtxhci.sys" as the culprit. Back to Safe Mode and looked it up - it's the Asmedia USB driver. As I couldn't get back to normal mode because of insta-BSOD on login, I ran a system restore to before the AI Suite installation. That worked and I got my desktop back. So I download the latest driver for Asmedia USB (v116230) install it without issue, then try installing the AI Suite again. This time, no crash, no problem.
I tried again to reinstall BitDefender. No problem, installed fine. Uninstalled it and tried to reinstall ESET NOD32 AV. It fails but because it didn't uninstally properly, so I get the uninstaller app and deal with that. Reboot again and install NOD32 AV without issue.
30 minutes and so far so good.
I hope this is helpful.