You would shop for laptops in your price range and locality. The error you supplied sounds like a drive failure. Did you try a factory reset and maybe a new drive?
My lenovo thinkpad X230 stopped working. Its getting the blue screen if death, error 0ca000021a (or similair) , attempted switch from dpc, etc. I cant even boot up windows now ! I need a good replacement, about £200, with my only fuss is it has to have a trackpoint. Thanks.