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My Acer Aspire's USB ports fried in the middle of a system recovery. So I pulled my internal HDD and placed it in an external HDD casing and installed Ubuntu on it as a bootable external HDD using a Dell Inspiron 15 inch.

Now I want to use this external HDD as the internal HDD on my Acer but this HDD works fine on the Dell (as external HDD) but freezes at boot-up on the Acer Aspire (as internal HDD). Since the USB ports are fried and it has no optical drive I have no way to boot the acer except this HDD.

I think its a problem with screen resolution but I shall be grateful for any possible answers.

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