Before fixing a Microsoft Windows blue screen or blue screen of death error (BSoD), you must first identify what error it is, as there are multiple types of blue screen errors.

Tip
If you are experiencing a completely blue or light blue screen with no text or error message, your computer may have a bad video card or monitor, resulting in only seeing a blue screen. If possible, attempt to check if your video card is having issues or your monitor is bad.

Note
If you are getting a blue screen and then your computer immediately reboots without being able to read the text in the blue screen, follow the steps below. If you cannot get into Windows to perform the steps below, boot the computer into Safe Mode. If you cannot boot into Safe Mode, you may have corrupt Windows system files, a defective memory chip or a defective hard drive. You should run hardware diagnostic tests to determine if the memory or hard drive is causing the blue screen errors.
Disable automatic restart

First, to facilitate troubleshooting the problem, disable automatic restart.

From the desktop or in the Windows Start menu, right-click on My Computer or Computer.
Click the Properties option.
In the System Properties window, click the Advanced tab or the Advanced system settings link.
On the Advanced tab, click the Settings button in the Startup and Recovery section.
In the Startup and Recovery window, uncheck the Automatically restart check box.
Click OK.

Blue screen errors
Windows NT, 2000, XP, Vista, and later versions of Windows have a blue screen error that is similar to the example shown below. These error messages often contain more detailed information and contain information that can be searched for and found. If you’re not getting a blue screen error that looks like the example below, skip to the next Fatal exception section.

X