PPM003 / PPM004 issue in MacBook Air

arto_Fin wrote:

My MB Air couldn't upgrade the last Catalina OS version. It was cancelled and I cannot log in after this, no with old version or with setup program. If i ddrive diagnostic program, I'll get notice, that I can have problem with memory module with code PPM003 and extra code PPM004

My compu was doing well before trying update.

What to do?

Thanks

onboard memory error

You do not say what exact MBA this is— non the less RAM is soldered to the board

This would be a hardware issue out of your reach and would require service/assessment

Apple and their AST (Apple Service Toolkit) diagnostic is certainly more comprehensive than anything we can sort out here

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/

Outside the USA

https://locate.apple.com/country

From iOS device using the app to make a online Genius Bar appointment is easy:

https://itunes.apple.com/us/app/apple-support/id1130498044?mt=8

(note: due to the temporary closure of Apple Stores and the staggered reopening there may be some delays.

ref: https://www.apple.com/shop/browse/store/temporary_closures )

“Mac notebook, contact us and we'll send you a box you can use to ship it to an Apple Repair Center. We'll return your repaired product to you as quickly as possible. Depending on where you get service, you might be able to check the status of your repair online.” Start a service request https://support.apple.com/mac/repair/service

Call Customer Support (800) MY–APPLE (800–692–7753)

or on line https://getsupport.apple.com/

or call AppleCare Support at 1-800-APLCARE (800-275-2273)

Those codes are indicate of failure of your computer's memory chips, or possibly they are not seated properly. Updating the MacOS does not cause this, it's the memory chip(s) that are faulty, just using the computer (the update does intensively exercise the computer for a short time) will bring this out. This will also likely prevent your computer from booting or operating properly. It needs to be seen by an authorized Apple service person. If you are comfortable opening up your laptop

-- there are many small screws that require special tools and inside things are very tightly packed together (the Macbook Air is very thin) and can easily be dislodged if you are not careful, you will need to wear a grounding strap -- you can check that the memory is properly seated. Otherwise, it needs to be serviced by someone who is familiar with how to do this.