Hi, it might be a caused by overheating - are internal fan(s) are working ok and air vents aren't blocked. In general, does laptop feels hot especially underneath?

Hi, as first try his guide: http://ccm.net/faq/4811-toshiba-laptop-reset-to-factory-settings Using the Recovery partition To restore your laptop to its factory settings, follow these steps: Warning: All data on the hard drive will be erased. Back up any important data before proceeding. Make sure the computer is connected to a power supply and do not switch it off or restart during the process. 1) Hold down the power button for ten seconds to switch off your machine Please note: Holding down the power button on the machine forces it to switch off. Any unsaved data will be lost. 2) Press and hold the zero key and at the same time, tap the power button once to switch on your notebook 3) When the machine starts beeping, release the zero key 4) When prompted by the warning screen, select Yes to continue with the system recovery 5) Select Recovery of Factory Default Software and click Next 6) Select Recover to out-of-box state and Click Next again 7) Click Next to Start the recovery if doesn't restore, then...

Hi, the guide how to replace screen can be found here: MacBook Pro 15" Unibody Mid 2010 Matte LCD Replacement Regards, Kris

Hi Karen, unfortunately, you can't replace CCD bulb on its own as it comes as full assembly (service part). You can get one here: http://www.partshere.com/online/detail.a...-ADF_Scanner but you might need someone tech-savvy to replace it. Regards, Kris

Hi, did you try to flash it using Odin? Regards, Kris

Hi, Once you've ordering new logic board and you've got complete trackpad assembly already, that should sort everything but if there was liquid spilled over it, there is possibility that keyboard got damaged as well so once you'll take the MacBook apart, carefully check for any liquid marks everywhere - superdrive, keyboard etc. . Also, check all ribbons and cables just in case with special attention paid to LVD (screen connector cable). The complete collection of guides for yours MacBook you can find here: MacBook Pro 15" Unibody Late 2011 Regards, Kris

Hi, as first ill try to clean system out of the all usual junk / or even better install clean copy of OS X and migrate your stuff from old hdd to ssd - performance should improve significantly. finally, ram upgrade will speed up the system even more, so you should do both :) Regards, Kris

Hi, replacement screen have got lower resolution that original one so the only solution is changing screen font size in Window's Control Panel ..or replacing the screen with correct one :) Regards, Kris

Hi, as first perform NVRAM reset: Command-Option-P-R Reset NVRAM. Release the keys after you hear the startup sound again, it might help if not, try to boot in safe mode: Shift ⇧ Start up in Safe Mode and report results then. Regards, Kris

Hi, sure you can :) just ensure that motherboard is taken from sim-free and not blacklisted phone (IMEI) Regards, Kris