Sony PCG-R505ELK - Manual (Page 159)

Troubleshooting Your Computer
My computer does not start.
 Check that the computer is plugged into a power source and that it is turned on. Check that the power indicator on
the computer's front panel shows the power is on.
 Check that the battery packs are inserted properly and are charged.
 If you are connected to a docking station with a floppy disk drive or an external floppy disk drive, make sure the
floppy disk drive is empty.
 Confirm that the power cord and all cables are connected firmly, as described in the section "Connecting a Power
Source" of your printed Quick Start.
 If the computer is plugged into a power strip or UPS, make sure the power strip or UPS is turned on and working.
 If you are using an external display, check that it is plugged into a power source and turned on. Check that the
brightness and contrast controls are adjusted correctly. See the manual that came with your display for details.
 Take the battery pack off the computer, unplug the power cord and plug it in again, then turn on the power.
 If the power control button does not function, remove the AC adapter and battery pack and wait one minute, then
reattach them and press the power button.
 Condensation may cause the computer to malfunction. If this occurs, do not use the computer for at least one hour.
Page 159