Deep Freeze or something similar for software stability?

So, I'm pretty uncomfortably close with a guy you might all know, Law, Murphy's Law, when it comes to computers I think. I often get problems that are not a quick diagnosis or simple fix. Most of my problems ended up being hardware related, so especially in case of hard drive issues, I've been working out better backup solutions, particularly including hard drive imaging. I'm craving some stability so I can more agressively search out gigs, rather than holding back because my computers are too messed up to write music with.
 
I really want to be able to easily minimize or rule out software issues without the hassles and restrictions of worrying about changed settings or malware from internet, network, or removable media. I will have my backup options; I'll be fine with keeping my data and OS's safe and easily restored with backups, redundancy, and imaging, should hard drives need replacement.
 
However, compared to resorting to keeping the machine offline or restoring an image should something get messed up (or I give up fixing it), wouldn't it be simpler and better to just set up my standard image and Deep Freeze it?
 
I don't know much about Deep Freeze other than that we use it as school for student workstations and how every restart brings up the exact orginal image, but am I wrong (maybe over-simplistic) in my impression that if something goes wrong, all I have to do is restart the computer and I get the information that 1: It's gone, software issues solved, or 2: Problem persists, go check hardware?
 
I'd have external HDDs or ThawSpace for data.
 
 PS: I think, really, the main changes that can happen are updates; keeping Windows and programs updated. How does that play into your stability concerns since updates can cause issues themselves? How do you fit updates into your planning?

P.S. With regards to windows and other program updates.
If you test your system thoroughly after each major update, you can then take another image.
Don't delete any of the older ones though.

If you are not installing software whatsoever (i.e. plugins, updated version of Sonar) sure take it off the internet.
Otherwise you should be running windows update regularly, and keeping your drivers and firmware up to date, just like sysadmins do. That makes your PC more reliable not less. This is not 1999.
 
You should also to separate your data from your applications into different partitions/disks.
When working consider disabling all network adapters.
 
The other thing you should be doing is backing up regularly. With trueimage you can restore from backup fast. As long as you backup before you install software you should be completely safe.
 
If you are worried about hardware you need redundancy such as RAID or mirrored hard drive, battery backups etc. In extreme examples have an identical PC on standby. I appreciate that is off topic however.
 
I don't see any advantages with your method.