The tablet PC, tabletop PC or notebook computer will not turn on or has no power.
Follow these steps to troubleshoot why the computer will not turn on or has no power.
IMPORTANT: While following this procedure, note the LED status at each step. This will provide additional information for the technician if repair becomes necessary.
- Because each of these steps represents a possible solution to this issue, check the computer status after completing each step.
- Check if the DC jack is loose or damaged within the computer.
NOTE: If the DC jack on the computer is loose or damaged, the computer may require service.  Go to Product Repair.
- With the computer off, remove media from the CD/DVD/BD drive.
- Disconnect all external devices that are connected to the computer.
NOTE: These devices include, but are not limited to, a modem, floppy disk drive, network connection, USB device, printer, keyboard, or mouse.
- Connect the AC adapter into a known working AC outlet and to the DC jack on the notebook, and then attempt to turn on the computer normally.
- Verify the correct Sony® AC adapter is being used, and not a third-party replacement AC adapter. To determine the model number of the AC adapter for your computer, refer to the specifications available online. Manuals are posted on your model support page.
- Connect the AC adapter directly to a wall outlet and not to a surge protector or extension cord.
- Some AC adapters have a POWER LED indicator and can be confirmed as receiving power by ensuring the LED is lit. If the AC adapter is damaged, or the LED is not lit or continuously flickers when plugged into a working AC outlet, the adapter must be replaced.  Go to Parts and Accessories.
- Disconnect the AC power adapter, remove the battery, and then press and hold the Power Switch for 5 seconds. Once that has been done, connect the AC power adapter again, and then attempt to turn on the computer normally without the battery installed.
- If the computer ships with a built-in battery (one that cannot be removed), use a pin or paperclip to press the Battery Off button on the underside of the notebook. Once the computer is turned back on, this will reset the battery to its default state. The exact location of the Battery Off button can be found in the Users Guide. Manuals are posted on your model support page.
- Only genuine Sony batteries are supported for use with VAIO® computers. Replacing the original battery with a non-Sony battery can cause a variety of power related issues.
NOTE: If the computer turns on without the battery, the battery is either completely drained or defective. Put the battery back in, reconnect the AC adapter and charge the battery for 24 hours. If the issue still occurs, that battery is the problem and will need to be replaced.
- With the computer off, remove any additional Random Access Memory (RAM) that may have been added to the computer. Once removed, again attempt to turn the computer on normally.
NOTE: If removing the added RAM memory resolves the issue, check the computer specifications to ensure the memory modules meet the minimum requirements. If they do, the modules themselves may be defective.
The troubleshooting steps listed above should resolve your issue. If you have completed all of the steps and the issue is not resolved, service may be required.  Go to Product Repair.
NOTES: When shipping the computer for repair, include notes of the LED status that display during troubleshooting.