Matt, Welcome to Geeks To Go.
When you are booting up the computer keep hitting the F8 key until you can see this screen.
Then pick the last known good configuration
by using the arrow keys to highlight it., then click the enter key. It may take a while but it may bring your OS back.
If that does not work, please do the same F8 thing except this time pick safe mode. Once in safe mode you will :
1. Right-click My Computer, and then click Properties.
2. Click the Advanced tab.
3. Under Startup and Recovery, click Settings to open the Startup and Recovery dialog box.
4. Clear the Automatically restart check box, and click OK the necessary number of times.
5. Restart your computer for the settings to take effect.
Now when you go to shut down and a fatal error occurs, you'll at least see it and it won't cause an automatic reboot. You still have to sort out what's causing the problem. You can look up the error message here.http://www.aumha.org/a/stop.php
You can post the message back here to see if we can help.
If none of the above works you may have to find a Vista DVD and do a check disk with it.
Windows Vista - Running Checkdisk from a Boot CD/DVD
If Windows will not boot in either normal or safe mode, there may be a problem with the file system on your hard drive, or the hard drive itself. Microsoft provides a utility, checkdisk, that can help determine the state of your hard drive.
CAUTION: Please make sure your important data is backed-up on an external storage device
(such as a CD, DVD, or external hard drive) before attempting this procedure. DoIT assumes no
liability for data loss that occurs as a result of this procedure.
1. You must boot from the Vista installation or recovery disc that came with your computer.
insert your Vista installation DVD and then restart the computer.
2. If you are prompted to Press any key to boot from CD or DVD... do so. If you do not
press a key before the message disappears, the computer will not start using the CD or
3. After your computer has booted from the disc, select your language and the press Next.
4. Click on Repair your computer.
5. You must choose the operating system that you would like to repair. For most users there
will only be one option listed. Select the operating system you wish to repair and click Next.
6. The System Recovery Options will then appear. To run checkdisk, you must click on Command Prompt.
7. A black window will appear. This is the Command Prompt.
#In order to run checkdisk to repair the hard drive, you should type the following:
chkdsk C: /r
and press Enter. If Vista is installed on a drive besides the C: drive, you should replace C: with the appropriate drive letter.
8. Checkdisk will now run. The scan may take several hours to complete.
9. When the scan is complete, a report will display. Write down any errors on the report and post them here.
10. To leave the System Recovery tool and reboot your computer, type exit and press Enter.
Remember to eject your Windows Vista CD or DVD before your system tries to boot from it.
Hopefully chkdsk will fix your problem. If even chkdsk does not fix your computer, you will need to save as much data as you can to another computer or CD's/DVD's and then do a reinstall of the system on your computer. For now lets try these thing to see if your system will come back.
Edited by SRX660, 27 August 2008 - 07:33 AM.