BSOD 00x50 vipre anti-virus conflicting with new anti-virus

I did a bonehead move of installing PC tools anti-virus before uninstalling vipre on my wife who's out of town. The kids infected it playing flash games. long story short, Her Gateway (win7 home premium) is on a a start-up loop. All I can get to work with a recovery disk is get into the DOS prompt by the shift+F10 at the recovery screen. Is there any way I can fix this with regedit or in a DOS prompt?

If it helps, here's the startup Repair Log:

Problem signature:
Praoblem Event Name: StartupRepairOffline
Problem signature01: 6.1.7600.16385
Problem signature02: 6.1.7600.16385
Problem signature03: unkown
Problem signature04: 21200785
Problem signature05: AutoFailover
Problem signature06: 5
Problem signature07: 0x19
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1033

So to summarize, You messed up the wife's PC and your trying to fix it before she gets back, but if you don't the kids are getting it?

Just messing

Can you boot into safe mode? press f8 while the PC is booting up, select safe mode and see if you can uninstall that software.

I will see if I can get you more Help!!

Grandsea,
don't know if you will make the deadline, but:

HOW TO USE MICROSOFT'S OFFLINE MALWARE REMOVER
Windows Defender Offline
· performs an offline scan of an infected PC to remove viruses, rootkits and other advanced malware.
· is a free standalone, bootable malware and virus remover from Microsoft.

Download Windows Defender Offline (about 785 kB)
You will have the choice of downloading the 32bit version (x86) or the 64 bit version (x64).
The link will help you determine whether you are running a 32 bit version or 64 bit version of Windows

NOTE!! You can download and prepare a 32 bit version using a 64 bit version of Windows
NOTE!! You can download and prepare a 64 bit version using a 32bit version of Windows.

You run the 32 bit version on a 32 bit version of Windows.
You run the 64 bit version on a 64 bit version of Windows.

The 32 bit download file name is: mssstool32.exe
The 64 bit download file name is: mssstool64.exe

For the curious, this program was originally name Microsoft Standalone System Sweeper.


INSTALLATION:
· Requires an Internet Connection.
· Insert 512 mB or larger USB stick into a usb port.
· Run the downloaded program--mssstool64.exe or mssstool32.exe
· NEXT button
· Choose the option On a USB flash drive that is not password protected
· NEXT button
· NEXT button
.
The install program will:
· format the usb stick using the NTFS format.
· download less than 230 mB.
· name the USB stick WDO_Media32 or WDO_Media64
· use less than 300 mB.

How to UPDATE the Windows Defender Offline USB stick:
· reinsert the usb stick
· run the installation program, mssstool64.exe or mssstool32.exe, again.
· the update will download less than 65 mB.

Since the malware database is sometimes updated several times in a day, always update before running.

PERFORM AN OFFLINE SCAN
Bootup your computer from the USB stick
Windows Defender Offline will automatically perform a quick scan.
After the quick scan finishes, Choose Full Scan
Select all of your drives

The initial, full scan can easily take several hours, but
Remember, your computer is being very thoroughly checked for all types of malware.

Tirst, boot into Advanced Boot Options and select the "Last Known Good Configuration" to boot.

If fails,try running Startup Repair , for three separate times with restarts after every single run.

If still fails, try all the steps suggested in Troubleshooting Windows 7 Failure to Boot .

arc,
He has malware. The malware must be eradicated first, then your steps are applicable.

Karl,
All is included in Troubleshooting Windows 7 Failure to Boot . See the first two steps.

1. Please review your sequence.
2. Best to only tackle one problem at a time rather than throwing an entire solution list at someone.