Sorry to butt in here, but I've got a few comments/suggestions:

1) Intel Turbo Boost will automatically overclock an i7 or i5 processor.
Here's some links that show the acceptable overclock:\
Intel® Core™ i7 Processor Extreme Edition — Intel® Turbo Boost Technology frequency table
Intel® Core™ i7 Desktop Processor — Intel® Turbo Boost Technology frequency table
Intel® Core™ i5 Desktop Processor — Turbo boost frequency table
I have heard that it's a pain to turn off, but haven't tried it myself.

2) Often it's difficult to boot from a CD/DVD/USB drive when you have a UEFI based system.
For that I suggest running Prime95's Blend test in order to stress test the RAM inside Windows.

As for booting from the other device, there's several things that need to be switched:
- select legacy/BIOS mode rather than UEFI
- select CSM (compatibility support module)
- disable SecureBoot
Keep track of what you've changed - so you can switch it back.
Most systems will let you revert to default values, but you don't want to be stuck if it doesn't!

It's still not good to force shut down your system - but it's not as bad as it was in the XP days.
But it got you back to your Desktop - and that's what counts! :0)