Unable to perform fresh install Macbook Pro MID-2012


hello everybody,

need cause i'm getting mad here!!

mid-2012 mb pro became incredibly slow (for example open picture took 3 minutes more or less) thought damage 500 gb internal drive hard drive (after 6 yeas of usage seems reasonable me).

important documents external drive , bought new seagate 500 gb perform clean installation.

when start mb pro new hard drive installed takes 10 minutes boot in order display restore options page (the 1 disk utility etc..) , when start installation of os bar moves (like pass 17 minutes remaining 15 takes more 20 minutes).

i've tried erase , format new disk twice, , tried install both high sierra , after yosemite, neither 1 working.

after few hours on installing page error saying "installation not performed on computer, please restart".

beside hd, cause of such lost of performance?

thank in advance.

best,

filippo
 



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