my daughter gave me a toshiba satellite and said it needed a power supply I bought one and it charged. Soon after it ran slowly and then froze up can't close apps or install new one, mouse works and can get into task manager and reboot.took it to repair shop, they said win 10 would fix it, it did not still does the same thing, I did replace the power supply with the same one it came with which was bad. I have no idea what's going on and can't find anything like this on the web. Please help 
