Hello! That was the title of an old post from 2006, but closest to my situation. I am REALLY a novice at this kind of stuff so I'm hoping someone can help me and make it easy for me to understand. I was working on my laptop today at work and it just shut down. After spending the better part of the day trying to find info about this, track it down and hopefully troubleshoot it, I come to find out that I cant take any of the suggested actions, since they all seem to be things to do AFTER you have logged on (in safe mode, normal, whatever). I cant even get that far. Basically, I get this message each time I try "We apologize for the inconvenience, but Windows did not start successfully. A recent hardware or software change might have caused this." My options are: Start in safe mode. Safe mode with networking. Safe mode with command prompt. Last known good configuration setting (most recent setting that worked)." Start Windows normally. I have tried each option and get returned to the same screen. I followed one instruction and tried inserting the windows cd and it did get me one step further. It took me to this screen: "a problem has been detected and windows has been shut down to prevent damage to your computer. The problem seems to be caused by the following file: i8042prt.sys An attempt was made to write to a read only memory If this is the first time you've seen this stop error screen, restart your computer. If this screen appears again, follow these steps: Check to make sure any new hardware or software is properly installed. If this is a new installation, ask your hardware or software mfgr for any windows updates you may need if problem continues, disable or remove any newly installed hard/software. Disable Bios memory options such as caching or shadowing. if your need to use safe mode to remove or disable components restart your computer, press f8 to select advanced startup options, and then select safe mode. technical info: ***STOP: 0X000000BE (0XF79E0D71, 0X05C8FI21, 0XF79EE148, 0X0000000B) ***I8402prt.sys - AddressF7636FEF base at F7633000, DateStamp 41107ecc" Anyway, long story short, I cant get my laptop to get past this point to even try anything else that was suggested. Help!....please.......ANYONE!!! thanks!