HP ProDesk 480 G7 PCI Micro Maintenance and Service Guide - Page 5
Mouse does not respond to movement or is too slow, Solving hardware installation problems
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System does not turn on and the lights on the front of the computer are not blinking 57 Solving power problems ...59 Power supply shuts down intermittently ...59 Computer turned off automatically, power light blinks red two times followed by a two-second pause, and the computer beeps two times (Beeps stop after fifth iteration but lights continue blinking) ...59 Power light blinks red four times followed by a two-second pause and the computer beeps four times (Beeps stop after fifth iteration but lights continue blinking 59 Solving hard drive problems ...61 Hard drive error occurs ...61 Disk transaction problem ...61 Drive not found (identified) ...61 Nonsystem disk/NTLDR missing message 61 Computer will not boot from hard drive ...62 Computer seems to be locked up ...62 Solving audio problems ...63 Sound cuts in and out ...63 Sound does not come out of the speaker or headphones 63 Computer appears to be locked up while recording audio 63 Line-in jack is not functioning properly ...64 Solving printer problems ...65 Printer will not print ...65 Printer will not turn on ...65 Printer prints garbled information ...65 Printer will not print ...65 Solving keyboard and mouse problems ...67 Keyboard commands and typing are not recognized by the computer 67 Mouse does not respond to movement or is too slow 67 Solving hardware installation problems ...68 A new device is not recognized as part of the system 68 Computer will not start ...68 Power light blinks red three times and then white two times 69 Solving network problems ...70 Network driver does not detect network controller 70 Network status link light never blinks ...70 Diagnostics reports a failure ...70 Diagnostics passes, but the computer does not communicate with the network 71 Network controller stopped working when an expansion board was added to the computer 71 Network controller stops working without apparent cause 71 Cannot connect to network server when attempting remote system installation 71 System setup utility reports unprogrammed EEPROM 72 ENWW v
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