I'm trying to help my cousin with her TOSHIBA 5105-S607 LapTop which has not worked for her in a year or two. She had a few 'friends' look at it and they told her it was 'fried'. I brought it home, realized the battery was probably sone dead, so plugged in the AC adapter and hit power on. Got an imediate error in which I failed to write down (stupid me), powed it back off and on, "selected boot machine with last known good config" and it came up! Nice......... I went immediately to try to get to the internet through my cable ISP and it worked fine. I went to Windows Download and found she needed about 22 updates for her WINXP Home OS which I downloaded and restarted the PC as told noticing she didn't have SP2 installed. My Therory was correct and that once I downloaded all the 'old' updates she had, Windows Update would come back with "do you want to install SP2" which I elected to do. That was the end. Now when I try to power this beast up, I get to the screen that gives me the option to select Safe Mode, safe Mode with Networking, Safe Mode with Command prompt, Reboot with last known Config, and Restart Windows Normally. None of those options now work. Is it possible that the Battery is so dead and the AC adapter may also not be any good so the PC just stops? Appareciate any help. Thanks much. Larry...