Electricity failed for an Asus Windows 7 home premium x64 laptop. 52% file completion and 15% install at that moment. Have not attempted any continuation. This is a wifi home only. Seeking guidance on how best to proceed.

The repeating complaint I get is about folk losing their files. Any OS change is well, dangerous so seasoned PC users eventually know that "Everything not saved will be lost" (Wii quit screen.)

So there are ideas to continue but first, are your files safe? If so try to see if it will reboot and continue.