So I'm working on this laptop here at the office. Compaq Presario 2700 running WinXP Home edition. A user brings it to me telling me that it won't boot up. Sure enough, boots to a blue screen with the error UNBOOTABLE_BOOT_VOLUME.. So I throw in my XP disk to run the recovery console and do a chkdsk /r. Upon booting up in setup mode from the CD, I get the error "CORRUPT KPDCLASS.SYS. Press any key to exit setup." And that's all it'll let me do. What are my options from this point?