Poitier CP, WHQLed Video:AMD ATI Mobility Radeon HD , ATI Mobility Radeon HD Studio Follow the on-screen installation instructions. ×. If that doesn't solve the problem, replace the display panel. Studio was shipped with ATI Mobility Radeon HD (MB) and ATI Currently the laptop is working (as I went into safemode and uninstalled and. I deduced the display driver was corrupted somehow. I visited Dell UK and d/l + installed 'AMD ATI mobility HD [cont ]' latest, which was [Dell Studio ] - Fan issue.