i have a windows 7 laptop.
But today the mouse acts very weird.
The mouse only works on the desktop and on google chrome .
I can fix it for a few moments if a do control + alt + delete.
I didn't install any software today . What sould i do.
as you don't say whether your using a USB mouse or the laptop touchpad you could try either changing the usb mouse to another port or re-installing the touchpad driver as drivers can become corrupted. Also have you checked that malware isn't the issue?
Try running a scan of Malwarebytes Free Anti-Malware & Internet Security Software