Power But PC Will Not Boot up

  ginge4343 20:36 28 Jul 14

Left my in sleep mode, tried to use the computer but could not bring out of sleep mode. Switched the machine off and then on again, power to cd rom, HDD light comes on, but do not hear them in operation. No beep codes. O/S is windows Vista. Can anyone help? Thanks

  Fruit Bat /\0/\ 20:45 28 Jul 14

Left my?

desktop / laptop? make / model?

any fan noises?

make sure no usb devices plugged in or disks in drives retry

switch off remove all power supplies (disconnect battery if laptop) hold power button for 30 seconds reconnect on mains only and retry.

disconnect reconnect HDD retry

possible PSU failure if above fails to work.

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