Solved Computer extremely slow

[wicken]

Two days ago when the laptop was shutting down I accidently removed the AC Adapter( I wasn't using the battery) and like you might imagine the computer shut down. When I turned it on again, it showed me the three usual options and I selected the normal way.
After that my computer is taking more than 5minutes to fully start up, my browser and windows explorer is constantly freezing and just now it took 5 minutes to show the message "Welcome" and after finally starting it showed a message in the background that one windows service didn't turned on which is Windows Aero. Anyway can help me fixing this issue please?

 

[marsmimar]

You may have some damaged or corrupt system files. I'd try running a System File Checker scan from an elevated command prompt (option two.) If problems are found run the scan 3 times rebooting in between each scan.

http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

If that doesn't fix things I'd next try a Startup Repair. Again, if problems are found run the scan 3 times rebooting in between each scan.

http://www.sevenforums.com/tutorials/681-startup-repair.html

If SFC and Startup Repair haven't fixed things, I'd consider a Repair Install. This would be pretty much a last attempt at repairing prior to completely erasing the hard drive and doing a clean install.

http://www.sevenforums.com/tutorials/3413-repair-install.html

 

[wicken]

You may have some damaged or corrupt system files. I'd try running a System File Checker scan from an elevated command prompt (option two.) If problems are found run the scan 3 times rebooting in between each scan.

http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

If that doesn't fix things I'd next try a Startup Repair. Again, if problems are found run the scan 3 times rebooting in between each scan.

http://www.sevenforums.com/tutorials/681-startup-repair.html

If SFC and Startup Repair haven't fixed things, I'd consider a Repair Install. This would be pretty much a last attempt at repairing prior to completely erasing the hard drive and doing a clean install.

http://www.sevenforums.com/tutorials/3413-repair-install.html

So far I did SFC and Startup Repair and I didn't found any problems but when the SFC made it to 100% complete my computer froze, I tried to start Windows Task Manager and I ended up in a black screen with this message "failure to provide security and options of closure".

 

[marsmimar]

Couple more things to try to eliminate problems. Possible that something installed on your computer (an application or program) is contributing to the problem. You could try running a Clean Startup (aka Clean Boot.)

http://www.sevenforums.com/tutorial...ation-conflicts-performing-clean-startup.html

Also some general troubleshooting steps for Windows 7

http://www.sevenforums.com/tutorials/220165-troubleshooting-steps-windows-7-a.html

And some additional troubleshooting for failure to start issues. Yes, I realize you can boot your computer, but many of the troubleshooting steps can pinpoint specific areas of concern like Safe Mode, Restore Points, etc.

http://www.sevenforums.com/tutorials/219533-troubleshooting-windows-7-failure-boot.html

 

[wicken]

I want to give some quick updates: I did everything the post above said but it didn't made any difference like I was expecting, now what appears to have fixed my problem was the rollback of some drivers that I had updated a few days earlier before this started to happen. The results are good, my boot is normal again no more slowdowns in the "Welcome" screen and so far I haven't experienced any freezes.

 

[marsmimar]

Good news, indeed! Thanks for posting back.