"Note: If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem."
Since details are slim, PLEASE read these prior solutions first.
1. The laptop battery discovery!
2. The Logitech driver befuddler!
I have 2 hard drives on my computer, and a third one lying around (not connected). I went to connect the third one in order to see what was on it. I did so by unplugging the computer power, pulling out the power and data plugs of the non-boot drive and putting those plugs into the third drive. When I started the computer up again, it asked if I wanted to start in Safe Mode, which I did. When it started up, the login screen was low-resolution (all the icons were really big) and I couldn't use the keyboard or mouse. The only choice is to press the power button, which shut it down normally.
I replaced the hard drive, so that it was just like it was before. I faced the same problem. On startup, I could use the keyboard to enter setup etc, but when it reached the login screen it ceases to work.
Is there any way I can fix this?