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If the computer is very slow or freezes as soon it boots to the desktop, your first step would be to check in Safemode.

Then,

- > you can try Clean Boot (How to perform Clean Boot)
- > If the clean boot fails, you can try after disconnecting all the external devices
- > You can also try Hardware clean boot

Follow the steps below to perform hardware clean boot

1. Right click on My Computer -> Properties
2. Hardware Tab -> Device Manager
3. Right Click on Sound Card, Video Adapter, Network Adapter one by one and click disable
4. Reboot the computer. If the problem is fixed then you can enable the hardware devices one by one to find the exact device that cause the problem

After you found the device that causing the problem you can resolve by installing last driver or replacing the device.

Sometimes, after you install a software or hardware you might have problem in booting the computer in to the desktop.

One solid message we used to get is “We apologize for the inconvenience, but Windows did not start successfully. A recent hardware or software change might have caused this.”

If your computer stopped responding, restarted unexpectedly, or was automatically shut down to protect your files and folders, choose Last Known Good Configuration to revert to the most recent settings that worked.”

If your computer doesn’t boot or if it got stuck with reboot loop or if it gives blue screen then you can follow the basic steps given below:

1. Reboot after disconnecting all the external devices. For eg. printer, scanner, Xbox, etc.
2. Read the error message properly if you get the blue screen. It may tell you the hardware or software that causing the problem.
3. Check whether you can boot it in the safemode
4. If it got stuck in the reboot loop and if you are able to boot in the safemode then go to System properties -> Advance -> Startup and Recovery -> disable Automatic Restarts. If you reboot the computer now you will be able to read the error message on the blue screen.
5. If you could boot the computer in the safemode then try disabling Startup items and non microsoft services from the System configuration utility (Msconfig).
Bala
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