My power went out last night while on was on my home computer. When the computer came back on, a black screen with white letters saying "WINDOWS did not start successfully. I have a HP computer and use WINDOWS XP. I tried to restart but if just flips between a blue screen with HP logo on it and the black screen. I used F8 during boot-up and got stop messages with different codes: 0x00000024, 0x00190203, 0x812A1490, 0xC0000102, and 0x00000000. Any suggestions??