why does my computer keep blue screening windows 7

The most important Blue Screen of Death troubleshooting step you can take is to ask yourself what you just did. 1) Did you just install a new program or a piece of hardware, update a driver, install an update, etc.? If so, there's a very good chance that the change you made caused the BSOD:
Startup using Last Known Good Configuration to undo recent registry and driver changes. Use System Restore to undo recent system changes. Roll Back device driver to version prior to your driver update. 2) Scan your computer for viruses.

Some viruses can cause a Blue Screen of Death, especially ones that infect the master boot record (MBR) or boot sector. 3) Update drivers for your hardware. Most Blue Screens of Death are hardware or driver related so updated drivers could fix the cause of the STOP error. 4) Return hardware settings to default in Device Manager. Unless you have a specific reason to do so, the system resources that an individual piece of hardware is configured to use in Device Manager should be set to default. Non-default hardware settings have been known to cause a Blue Screen of Death. 5) Return BIOS settings to their default levels.

An overclocked or misconfigured BIOS can cause all sorts of random issues, including BSODs. I had the same problem and fixed it today! I finally figured the thing out as nothing I read online worked. I took my hard drive out and bought an adapter to hook up my drive as an external storage through USB port on another computer. Once I located the drive I right clicked on external drive went to properties on the tools tab check for errors then check both boxes.

Takes a long time through the USB mine took 4 1/2 hrs but fixed the problem. I believe there is a problem in the operation system files and since this system is running it cannot be fixed on that computer. By putting in another computer you are not using the operating system files on that hard drive so then the files can be fixed by the utility on the hard drive. If a belt breaks on a tractor you don't fix it while its running you shut it down and use other tools to fix it.

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