Hi Peter,
Click Restart , hold down Command-Option-R to boot into macOS Recovery 
<http://link.tidbits.com/wf/click?upn=zybUG7zy-2FLXz49RDX-2FBr3iivqOP8mwO0ZRSwSZsCDuGtXqfiRdcGqhZOp5lwg0FIQJ4yiuGd7sy07S0h3Ct20ohPqdWU-2BTv8iopmFGrNCKoaYSqJ13UEC3cNPkBA6mPWp-2Bc7raJJe-2FT2ipbhn7FlJWeWsie1idNVI5mrsIBCI-2BM-3D_Ehl72FbXsv9zexTeJZUJiOfpoaSISOrkOj63gvfl2vlkRT0VRMiELLx-2BSkwoKg4zNRl5bZzFFWvhqwN5YBfQHwimIStI7WXT-2B1vrcmAq7YM9vXKn20-2BxXU9hnRHYqqF2y3DekO5KVPV19fZSOlRxTielsS5j4p9Z3vOCOS1ehdNDGVIxi9O6KmQ5mfmHEwVUuMVHs9QnaDF4YItiFnhOXZJ-2FCMHXhM1CaqtPd4rMo4EESfeowCcoBV6VEzL3-2By8vfF8xx-2BQV32ATw0eG0zFRoUEN4YNNMy6hYUpgp944hjmsugnJu73Zro0H8ccisbuCpJmk-2F-2Ftqy16ruFm90A2X2qGmTcKQYGZuYAs5CVAGqh6u8xzmbrwCMtCBNXJDg8X7YrQUtqjz9b5XwC1ixiFvXuD3omYDrtAU39avSmmojkqi-2F4ASrDoRMlAZ8o1iRz6Q402isXT4Uc-2BlU1jEDQu5kmHkYXn1CeSrsdH34E8F2Yc-3D>,
 and reinstall the operating system. 
(Did you know that different versions of Command-R cause different versions of 
macOS to be installed by macOS Recovery? 
Check out this Apple support article 
<http://link.tidbits.com/wf/click?upn=zybUG7zy-2FLXz49RDX-2FBr3iivqOP8mwO0ZRSwSZsCDuGlvmgdVii3pPHQI507293r-2F52P-2BDN5KGgrqznFj-2F-2FU5j1EmoLtdqvifZMRaiNmNA5nYsFQSd4FuOhkjOBoRj-2FAwnNyj00SBwlv33s-2BCoIrrqZYT-2Bltf89MM4-2BwB-2FvOk20-3D_Ehl72FbXsv9zexTeJZUJiOfpoaSISOrkOj63gvfl2vlkRT0VRMiELLx-2BSkwoKg4zNRl5bZzFFWvhqwN5YBfQHwimIStI7WXT-2B1vrcmAq7YM9vXKn20-2BxXU9hnRHYqqF2y3DekO5KVPV19fZSOlRxTielsS5j4p9Z3vOCOS1ehdNDGVIxi9O6KmQ5mfmHEwVUuMVHs9QnaDF4YItiFnhOXZJ-2FCMHXhM1CaqtPd4rMo4EESfeowCcoBV6VEzL3-2By8vW27DP4bx2T-2FVVnu54HS7r7EkxAU82clt-2F-2BJsEk2lHksTwSabpWbl4JUfOPoho7v0LaFqUAMBWbdOfgiKEXguMQXQBUP-2FogIlkuAMbBfWwrhs-2B2hp8hNkQ398LTahkdWoBePg5gbEcU81Ag-2FN9TwpoyyqaRGzqiYLetVWWrAQMzFds-2FDgUdHM3bI3u91OXwY2l4F6-2FIKRrWU5LcaBKCDrKnjeLLhRQmPQ1aXL2jDPi8E-3D>
 for the details.) 

Cheers,
Ronni

13-inch MacBook Air (April 2014)
1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
8GB 1600MHz LPDDR3 SDRAM
512GB PCIe-based Flash Storage

macOS High Sierra 10.13.4


> On 16 Apr 2018, at 1:05 pm, Peter Faulks <peterfau...@westnet.com.au> wrote:
> 
> 
> I wonder if anyone can help
> 
> 
> I've run into a problem with the MAC book pro - it's stuck in boot loop
> I've tried everything I know but it continues and stops when the progress bar 
> is full and remains with the Apple logo and black screen
> 
> Following the web based info disk utility and the combination of keyboard 
> prompts it returns OK to those tests
> 
> I have reloaded the disk image and also downloaded a new OS but it still 
> refuses to load (I do have a time machine backup on an external drive but 
> it's about 12 months old and I am trying not to loose last years data)
> 
> 
> Any ideas or help advice you can suggest ?
> 
> Peter
> 
> -- 
> Peter & Irene Faulks
> 
> PARKWOOD  Western Australia  6147
> 
> Email:        peterfau...@westnet.com.au
> Web:  http://peterfaulks.net/
> 



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