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Bob Rookie
Posts: 2
Registered: ‎11-23-2012
Message 1 of 5 (24,482 Views)
Accepted Solution

'operating system not found'

i hava a sony vaio pcg-71312L when I turn it on is says  'operating system not found' i tried to troubleshoot it but when i type the model number and it can't be found?

Posts: 1,228
Registered: ‎11-14-2012
Message 2 of 5 (24,468 Views)

Re: 'operating system not found'

Hello Bob,


Thanks for the post. PCG-71312L is hardware configuration code given by Sony as manufacturing # for the computer. Try to locate the model # starting with SV/VPC/VGN continued with alphabets and then with numerical values. You can locate the model # on a small label on the bezel of the LCD display or on the LCD hinge or at the top left or top right of the keyboard.


Check if the hard drive is listed in the BIOS. Restart the computer, press "F2" key when the VAIO logo appears to log into the BIOS (For Windows 8, press the ASSIST button then the F2 key).


If the hard drive is not listed, the issue may be related with the hardware. Reset the BIOS once. Use the arrow keys on the keyboard to locate the "Exit" button and select "Load optimized or default values" option on the BIOS Screen. Then, save the settings and exit the BIOS setup.


If the hard drive is listed, follow the steps from the following link:


In case, if the issue persists, contact Sony service team.

Posts: 3,846
Registered: ‎11-12-2012
Message 3 of 5 (24,457 Views)

Re: 'operating system not found'

Hello Bob,

We did some further digging for you,  we think you have an VPCEB13FX if not that its probably in the same EB series.

yes the  UL sticker says  Model number and pcg-71312 right on it,  however you should have it on an oval ID tag around the edge of your LCD frame bezel, or underneath on a white sticker.


Also this guide will help if you still cant find it



jth Enthusiast
Posts: 1
Registered: ‎07-26-2013
Message 4 of 5 (19,334 Views)

Re: 'operating system not found'

Link: seems broken.  

Model: vgn fw285jh

"Opeating System not found"

BIOS seems to recognize the HDD.

Recovery disk in BD not recognized.  

Posts: 5
Registered: ‎11-07-2013
Message 5 of 5 (16,664 Views)

Re: 'operating system not found'

[ Edited ]

When my Windows won't boot, I also got prompt "operating system not found"!

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