Troubleshoot Computer Booting Problem

During the life of your computer, you will probably experience problems with booting the operating system. These boot problems are often caused by newly installed hardware or software. Windows has many tools that can help you to troubleshoot boot problems, find and resolve device and driver conflicts and remove offending software. By using a process of elimination, you can often find the exact cause of the problem. Once you've done the necessary maintenance, you can attempt to reboot your computer normally.

Instructions:

1. Write down the exact error messages you receive while the computer is booting Windows. Click "Start > Run." Type "msconfig" in the field and click "OK." Click the BOOT.INI tab.

2. Check the box next to "/SAFEBOOT." Choose "MINIMAL" to reboot Windows in safe mode. Select "NETWORK" to reboot in safe mode with network support. Choose "DSREPAIR" to reboot in Directory Service restore mode.

3. Click "Start > Control Panel > Add or Remove Programs." Find the programs you installed most recently within the list and uninstall them. Keep the installation CDs or files handy in case you would like to reinstall the programs later.

4. Click "Performance and Maintenance" in Control Panel. Select "System." Select the "Hardware" tab. Click "Device Manager." Select the device that you added to your computer most recently. Right click the device and select "Properties." Click the "Troubleshoot" button and select the option that best describes the symptoms your device is experiencing.

5. Click on all of the plus signs next to the entries in Device Manager to expand all the devices. See if there are any black exclamation marks on a yellow triangle. This indicates a problem with your device. Also see if there are any red X marks near the devices. This indicates that the device is disabled.

6. Click "Start > Run." Type "msconfig" and select "OK." In the BOOT.INI tab, uncheck the /SAFEBOOT option. Reboot your computer. If the computer starts normally, you're finished. If it doesn't, reboot in safe mode and click "Start > Control Panel > Performance and Maintenance > System Restore." Select "Restore my computer to an earlier time." Choose a date on the calendar that is at least one day prior to the time that your computer began experiencing boot problems.


7. Reinstall any software programs or hardware you removed one at a time. Reboot the computer after each installation. Make careful notes of any error messages or boot problems you experience.

Source: http://goo.gl/kDs1h