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Windows 7: Invalid signature detected red box warning

12 Jun 2016   #1

windows 7 prof 64bit
Invalid signature detected red box warning

New Dell i7559 laptop that I just installed 250gb Samsung m.2 and replaced the conventional hdd with a Samsung 850evo 500gb drive. Now trying to load win7pro and getting the red box warning, invalid signature. Needing step by step instructions here on how to procede. I can also remove the ssd's and restore back to oem, then take it to the shop which I'd rather not do.


My System SpecsSystem Spec
12 Jun 2016   #2

Windows 10 Education 64 bit

Have a look at this, UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with It sounds like a UEFI Secure Boot issue.
My System SpecsSystem Spec

 Invalid signature detected red box warning

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