Control Panel layout is easy enough to fix...How to Change Control Panel View in Windows: Category, Small or Large icons
I have accidentally changed it myself without realizing until the next time I opened it.
Slowness, freezing, booting, and performance issues as you describe are not uncommon, especially with older computers
. There are various reasons for this - i.e. disk fragmentation, disk errors, corrupt system files, too many startup programs
, unnecessary services running, not enough RAM, dirty hardware components, etc. As you use your system it becomes filled with more files/programs and has a natural tendency to slow down and behave oddly so cleaning and regular maintenance is essential. One of the most common culprits is too many startup applications
. Almost all applications you install want to startup when Windows loads. Many of these programs are not needed and disabling them can save resources and improve performance as they are available from the Start Menu > All Programs or an icon on the Desktop if needed. For information on how to identify and disable unnecessary startups and other suggestions, please refer to this guide:
Removing unnecessary startups will also remove some items in Task Manager. Rebooting the computer more often and closing/reopening your browser also helps keep processes under control in Task Manager.