Hi,
The no bootable device found or the promary disk not found error can be caused because of the following reasons
1. The operating system has crashed
2. The harddrive is faulty.
Try the following steps
1. Remove any cd if there is in the optical drive
2. Disconnect the Ac adapater and remove the battery
3. Press and hold the power button on the laptop for 10 seconds
4. Reconnect the Ac adapter
5. Power on the laptop and press F12 key on the keyboard a couple of times slowly on the Dell screen
6. Select Hardrive diagnostics from the list
7. If the harddrive returns with an error code , you would need to replace the same
8. If not then, restart your computer and press F8, a couple of times on dell logo screen
9. Select safe mode from the list.
Use the following wizard
http://tinyurl.com/56ym45
Thanks
Proton
please describe more details i think you having problem with boot up then you need recovery dvd you made or try recovery from boot which hold mirror of windows. if you require more info i can provide but you need to give details
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