City Navigator 2008 Disk (PC not working after install)

I haven't heard anything. He could have had a Trojan or a Virus that kicked in at the same time. Can you instruct him on how to get into Safe Mode? I know on some machines its F8 and on others it’s F2.

Regardless of the cause of the malfunction, you can always take back your computer's operating system to the previous date when it was functioning normally.
Here is the procedure:

First you have to restart the computer in Safe Mode Usually by clicking the F8 button. (Tip: keep tapping the F8 button right after you push the power button untill you see the selection screen)And, select the Safe Mode.

Once the computer is started, Click: Start> programs> Accessories> System Tools> System Restore
Once you are there, you will see the calender with some BOLD dates. Select any of those dates (the one which is prior the date of the system crash) to restore.

It should work.

WincDhill

Thank all of you for the Help But none of the above works last resort is to format the HD didn't want to do all that to loose everything but now there is no alternitve

Yeah, I truly don't believe that it has anything to do with the install of the garmin software. Too bad that you can't get to safe mode.

I know this isn't a computer repair site; but maybe this will help someone else before they get in the same boat.

I've learned a long time ago to backup the operating system before updating or installing anything. Windows 'System Restore' has its limitations. In XP (I assume Vista is similar) you can't restore if you can't boot to Windows. Another problem is if you have a virus you're supposed to disable the 'System Restore' before cleaning out the virus. Disabling it removes all of your backups ... making it useless. For the Computer-unsavvy there is Acronis True Image. Even if you can't boot to Windows you can boot using their installation disk and restore your backups. I don't know how many times this has saved my a-s!

For the computer-savvy, in addition to the aforementioned, there's BartPe and the Supercharged version of BartPe, Ultimate Boot CD for Windows, both FREE. These bootable CDs are not easy to make, plus you need a Windows XP CD; but once you "get 'er done" they're invaluable. They're a bootable operating system on a CD. This allows you to get to the Windows partition and correct many of the system errors, plus allowing you to save the files you want before doing a Windows re-install.

If you're computer-savvy you may want to try making one of the bootable CDs for your brother before doing a complete reformat. At least he will be able to first save his important files.

RT