Sometimes roblox has errors that could cause it to stop functioning correctly. A quick re-install may be all it needs. This tutorial will help you re-install roblox on Windows 7, and Windows 8.
Windows 8:
Reinstalling roblox on Windows 8. If you do not use Windows 8 continue scrolling down until you see your OS name.
1. Open Control Panel
A. Put your cursor in the top left hand corner of your screen.
B. Move your cursor down to to "Settings"
C. Click "Control Panel"
2. Uninstall Roblox
A. Click "Uninstall a program" under "Programs"
B. In the search bar at the top right under the exit button type "Roblox" and press enter
C. Find and double click ROBLOX Player for [Your username]
D. Wait for the uninstall process to finish
3. Install Roblox
A. Go to roblox.com/install and click the big green Download Now! button
B. Download the program then wait for it to install
Roblox has been reinstalled!
Windows 7:
1. Open Control Panel
A. Click the Start Menu(the button in the bottom left corner of your screen with a picture of a flag on it)
B. Click Control Panel
2. Find "Uninstall Programs"
A. Click "Uninstall a program" under "Programs"
B. In the search bar at the top right under the exit button type "Roblox" and press enter
C. Find and double click ROBLOX Player for [Your username]
D. Wait for the uninstall process to finish
3. Uninstalling Roblox
A. Go to roblox.com/install and click the big green Download Now! button
B. Download the program then wait for it to install
Roblox has been reinstalled!