Help me ...my new laptop make problem

[narin.zhi]

Help me ...my new laptop make problem

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I usally use laptop to play "mugen Legacy 1.1 by noz"
Use win7  and use External harddisk to save data and game

At first i played in "hp" for2-3year
Don't use good graphic card ram8gb
But it can play well. 
Even take loading time for start 8-10min
Some stages-char when battle  will lag
...
But last week my mainboard in old laptop is broken 
technician told hard to repair.
So i decied to buy new one. "Lenonov z510"
Have ram 12gbp  good graphic card
I Hope my mugen will run better and can reduce lag-load time
...
But problem come !!
I extrenal harddisk to open mugen same style like old laptop
When start load time
Sometimes system said 
"can not to find stage/char in select.def "
when i can start game  and test battle
Sometimes system said
Can not load charaters ...or stages
I unzip new legacy mugen 1.1 
And copy -plaste some stages -chars for test run
But it have problem again and again.
.. 
What happen? in this case and how to fix this?
Now i feel disappiont in my new laptop
Can i play it form new laptop 
..
So can you help and answer me ?
I want join mugen community for more longer