Hi , hoping someone can help, been searching for answer to this problem for days!!!! ACER Travelmate 8571 laptop with 4gb ram OS - XP Pro with SP 1,2,3 Unable to start laptop and get the message: “Windows could not start because the following file is missing or corrupt: <Windows root>\system32\hal.dll. Please re-install a copy of the above file.” Put XP Pro Setup disk in cd drive to do repair: Setup loads files, gets to “Setup is Starting Windows” the Blue Screen of Death appears showing: “STOP: 0x0000007B (oxF78D2524, 0xC0000034, 0x00000000, 0x00000000)” Run Norton Bootable Recovery Virus check - shows no virus issues Run Chkdsk /f - again indicated no problems Completed Memtest - again no issues Any ideas! This has baffled me????