Hello, I'm new to this board. I appreciate all of your help in advance. Ok, I have a computer thats about 6 years old that i am trying to restore for my children. I got a hold of a new hard drive, so I decided to put it in. Originally the computer had a 40gb hd . The computer conked out eventually and i think the hd crashed, because I was getting the error message "no os system found" So after a few years i decided to get a new hd and start this project. I replaced the drive with A maxtor 160 gb ATA drive. Currently according to the BIOS it detected it after i replaced it, (at least when i pulled up the bios screen, i see it there) anyways, the computer has sdram /pc100 intel chip 256 memory and Im guessing that the last time the computer worked, I had recently upgraded it with windows xp professional. (by the way, i can't figure out the password, its been so long ago) anyways, now when i start it up I get We apologize for the inconvenience, but Windows did not start successfully. A recent hardware or software change might have caused this. If your computer stopped responding, restarted unexpectedly, or was automatically shut down to protect your files and folders, choose Last Known Good Configuration to revert to the most recent settings that worked. If a previous startup attempt was interrupted due to a power failure or because the Power or Reset button was pressed, or if you aren't sure what caused the problem, choose Start Windows Normally. Safe Mode Safe Mode with Networking Safe Mode with Command Prompt Last Known Good Configuration (your most recent settings that worked) Start Windows Normally Use the up and down arrow keys to move the highlight to your choice. EVERY option I select does nothing, it keeps going back to this screen. I don't know what to do, I selected the recovery console option, but as I said it asks for a password, and obviously I don't know it, because it keeps saying its incorrect. I don't know what to do, I dont have any recovery disks for this computer. I have a windows xp professional cd, but when i put it in it doesnt boot from it, and i already changed the boot sequence so it reads from the cd rom first. it always goes to this screen Any suggestions....I don't know what to do Ive tried putting my windows xp professional in the cd drive and rebooting the system, but its not prompting me to hit any key to reboot from the cd. It keeps going to the same screen. The software works, i'm certain of that. I have a HP pavilion 510 c ....phoenix system bios, trigerm mother board, intel i810E, SDRAM/PC100 2 DIMM/ 512 MB. ANY HELP IS GREATLY APPRECIATED.