Windows 7 extremely slow when booting up, freezes
Hello, I've been procrastinating on fixing this for about a month now but I recently got the spine in order to do this.
My laptop is a Windows 7, HP Pavilion dm4. I've been using it for around two years now, and at the beginning of December I turned it on and (I believe) it started to update. It took forever to update, and I think I rebooted it - to which it started the update process again. I *think* it finished updating, but after that the laptop started to become extremely slow, and I can't even use it. I've tried almost every solution on the web and couldn't fix it, so I'd appreciate you guys' wisdom.
Let me describe it the best I can - as of now, when I reboot it (accomplished by holding the power button down for a couple of seconds, waiting, then pressing it to start up again) it loads to the Windows Error Recovery screen, with four choices - Safe Mode, Safe Mode with Networking, Safe Mode with Command Prompt, and Start Windows Normally.
I've tried booting it in Safe Mode (which usually works well - takes around 7 minutes to get me to the desktop) but the desktop is all black, and I have no idea what to do in there - tried running Command Prompt in Administrator mode and sfc /scannow *but* it stalls around at 51%, and then says "Windows Resource Protection could not perform the requested operation", which is pretty frustrating.
Safe Mode with Networking and Command Prompt get me nowhere - tried doing the Command Prompt without elevating it to administrator mode and the same problem occurred.
A while ago, Start Windows Normally, after a couple of minutes (10-15) *usually* got me to the desktop, where it then became totally unresponsive and froze, but now (after trying a System Restore a couple days back), after getting me to the start screen (where you enter your password), it goes all black (though my cursor's still there), and I can't get out of it besides rebooting it. I think I've waited a maximum of 20 minutes before rebooting it.
I've tried System Restore, rebooting in Safe Mode and sfc /scannowing, and all to no avail. Was this caused by a virus (I run MSE) or a bad Windows Update? Help?