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Level 1

4 points

mac OS wont reboot after installing windows 7.

i have installed mac OS high sierra and right after using bootcamp i installed windows 7 ultimate 64 bit. then all was normal. but when i installed windows support software and try to reboot the system mac OS won’t show in the boot manu and only windows 7 shows in the boot after pressing oftion key.

when i press on windows 7 , go into windows booting mode shows blue screen and crash right after.

other start up combination key doesn’t work like cmd+R, shift, opt+cmd+R.

my previous mac OS was el capitan and windows 7 professional.

macbook early 2015

8gb ram

256 graphics card.

250 gb hard disk.

etc.

MacBook, macOS 10.13

Posted on Mar 26, 2019 8:00 PM

Best reply

BDAqua

Level 10

239,357 points

Posted on Mar 26, 2019 8:12 PM

Yikes... Gulp, not a lot you can do, you might need an OS installed on an external drive.

Have you done a PRAM reset, CMD+Option+p+r...

http://support.apple.com/kb/HT1379

In fact, do 3 in a row, takes a bit of time.

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mac OS wont reboot after installing windows 7.

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