My laptop won't start. It charges well (maybe...the indicator flashes) Although I have clicked the power button countless times it won't start. Can there be a problem with the power button or is it a Windows 8 is problem? Please help.
This post is 3 years old, you should probably make a new post to ask your question. BUT- On an Lenovo Ideapad the brightness control is Fn + Up Arrow. Your brightness changed because your "power plan" setting for battery power is probably set high, and your brightness setting for AC power is probably set low. If you put your battery back it'll go back to your normal settings. If you click the battery icon in your system tray you can edit the power plan settings there