I’ve bougth the 240GB SanDisk SSD a month ago for my Lenovo L520 laptop.
After I’ve copied win7 and data from my old hdd for some days everything worked well.
Then I’ve got “Operating System not found” error on booting.
Even in an external usb case the ssd was not recognised…
I’ve send it back and the shop run some tests. They said everything was working well and send me the ssd back.
It seems the ssd was empty again ( erased after tests they said) and I was able to install linux on it.
Its now one week past and i’ve deleted all linux partitions and installed windows 7 ( clean install).
After installing all microsoft updates i get “Boot device not found”; again!
I’ve tried to boot linux from usb stick and I see that bios doesnt recognise the SSD.
F12 ( Boot Device selection ) doesnt shows the device also.
Some Idea whats wrong??
Lenovo L520, 8GB, SATA AHCI Mode enabled