I recently got an old Toshiba u840 Ultrabook with AMD HD 7500M with windows 7 on it. I have an SSD with Chromebook flex os on it. I formatted the drive and gave it windows 10 for the laptop. When I started installing AMD Catalyst drivers on the computer and restarted, it lags badly and made a beep sound. Eventually, it crashed. I went into safe mode and disabled the graphics card and it doesn't have the issues anymore. Does anyone know about this issue?