u/Ayeohzee

I'll preface this by saying that I know this question has been raised a lot on this subreddit but I'm feeling a little paranoid so I'll ask it again.

Usually I used to get 650 to 665 km with AC off and 585 to 590 km with AC on. The average efficiency that I used to get was around 8.5. It's been almost a month since I've started getting 3.5 - 4.5 efficiency consistently. My route hasn't changed, the way I drive hasn't changed and my AC settings are still what they were before (23 temp with fan speed at 3). There was an issue with an OTA I installed so I took my car to the service centre and they reinstalled the update so it's not a software bug. Now I know the heat is brutal (45 degrees where I live) but I've been seeing people say that their efficiency has dropped like a couple units but for it to be half of what I usually used to get is crazy. Is the excessive heat the only reason why this might be happening or should I get something checked if this isn't normal? Would love some advice as I'm losing my mind.

Thank you.

I built my PC in 2020 and used it quite a lot for 4-5 years before eventually taking a break which lasted for more than a year. I booted up the PC yesterday and a 'Memory PMU training error' popped up. After opening the BIOS, I saw that only 1 stick out of my 2 sticks of RAM was being recognised so instead of having 32 gigs of RAM, I now have 16. I researched a bit and decided to check if the stick that wasn't being recognised is damaged or not. I switched the sticks and the same thing happened so I realised that it's not the stick itself but the slot. So I took out the sticks from their original slots (2 & 4) and inserted them into :-

1 & 2 - Black screen (Fans kept spinning and RAM lit up)

1 & 3 - Black screen (Fans kept spinning and RAM lit up)

2 & 3 - Black screen (Fans kept spinning and RAM lit up)

1 & 4 - Black screen (Fans kept spinning and RAM lit up)

2 & 4 - Memory PMU training error

3 & 4 - Black screen (Fans kept spinning and RAM lit up)

So I inserted just 1 stick into slot 1, 2, 3 and 4 and only slot 3 works and no PMU error. Not slot 2 or 4 but slot 3 works when only 1 stick is inserted. I'm really confused as to what might be causing the problem.

Please help me out as I was going to sell this PC and build a new one on the AM5 platform but I don't think I'll be able to sell this with all these problems.

Thank you.

I built my PC in 2020 and used it quite a lot for 4-5 years before eventually taking a break which lasted for more than a year. I booted up the PC yesterday and a 'Memory PMU training error' popped up. After opening the BIOS, I saw that only 1 stick out of my 2 sticks of RAM was being recognised so instead of having 32 gigs of RAM, I now have 16. I researched a bit and decided to check if the stick that wasn't being recognised is damaged or not. I switched the sticks and the same thing happened so I realised that it's not the stick itself but the slot. So I took out the sticks from their original slots (2 & 4) and inserted them into :-

1 & 2 - Black screen (Fans kept spinning and RAM lit up)

1 & 3 - Black screen (Fans kept spinning and RAM lit up)

2 & 3 - Black screen (Fans kept spinning and RAM lit up)

1 & 4 - Black screen (Fans kept spinning and RAM lit up)

2 & 4 - Memory PMU training error

3 & 4 - Black screen (Fans kept spinning and RAM lit up)

So I inserted just 1 stick into slot 1, 2, 3 and 4 and only slot 3 works and no PMU error. Not slot 2 or 4 but slot 3 works when only 1 stick is inserted. I'm really confused as to what might be causing the problem.

Please help me out as I was going to sell this PC and build a new one on the AM5 platform but I don't think I'll be able to sell this with all these problems.

Thank you.