Hi, I have Acer aspire 1642, with Windows XP. It crashed yesterday; now if I restart it it provides me with several options to start the windows with: 1. Start with the last working configuration 2. "Safe Mode" 3. "Safe Mode with Networking" 4. "Safe Mode with Command Prompt" 5. "Start Windows Normally" When I start with any option I ends up with a blue screen with some text on it (can't read it as this screen goes away very quickly) and then blue screen disappears and every thing start with scratch!! Could anyone please help!!! If in case I need to buy a new Windows XP cd, how much it is going to cost and which online place (UK) is the best??!!!!