Can you please see if you can boot in safemode? (Restart the computer and keep tapping the F8 key till you get a list of options and choose safe mode). Once booted send the svcpack.log
- With reference to this bug check, it can happen if some critical registry keys and values are missing.
- Have you tried to modify any registry entries before SP3 installation?
- Try also booting from "Last Known Good Configuration " if the above things don't work.
You may directly contact me at ravisastry.kadali[AT]microsoft.com
Ravi Sastry Kadali