The long version: I have ArcSoft's TotalMedia 3.5 installed on my Win7 machine. The software came with my Diamond USB TV stick and I use it to record old movies from TV. It has worked fine for many years.
Then I upgraded Win7 using an NTLite install. (Upgrading is different from reinstalling. Upgrade preserves your old settings.)
After the upgrade, TotalMedia stopped working. In fact, I couldn't even remove or repair it with the OEM Diamond DVD.
At first I thought this was due to a component I had removed using NTLite. But now I'm pretty sure that the problem is that TotalMedia is not compatible with DEP AlwaysOn.
In my old Win7, I had DEP set for OptOut. But in this NTLite build, I set it for AlwaysOn. (See the old NTLite archive for how to do that in NTLite.)
I kinda confirmed this by restoring my old Win7. On it, I was able to use the Diamond DVD to remove TotalMedia.
So now I'm doing another update of Win7, this time with TotalMedia removed from the base install.
Anyway, iKernel is an old, old installer, probably from Windows 3.x days. So thought I should document this problem here if anyone increases their DEP setting in Windows using NTLite.