Throttling When Laptop is plugged in, BD Prochot and other options not helping.

[Rackasaurus]

I have a fairly new HP laptop with an Intel Core i5 1035G1 processor and up until now it was working very well. However, about a week ago some throttling issues started to appear when my laptop is plugged in. Usually my processor runs idle at around 2.35Ghz but when on charge it drops down to around 0.15Ghz. I have scoured the web for solutions to this problem and stumbled across ThrottleStop, where I disabled the BD PROCHOT option and followed the advice given in similar threads on this forum site. I have also tried using different power adaptors but this did not help. However, following advice from other threads did get my CPU up to 0.56Ghz idle when plugged in. I would like to know what else is throttling my CPU and if there is a way to get it back up to normal speed. I have noticed red flashing 'EDP Other' boxes on all three of the columns on the limits window, occasionally accompanied by PL1 and PL2. This may be the problem but as I'm new to this and made an account just to get help from this thread, I do not know how to resolve the problem myself. All help is greatly appreciated!

 

[unclewebb]

EDP OTHER across all 3 domains usually refers to the PP0 Current Limit. Open up the TPL window and see what that is set to. Try adjusting it to a big number like 256 and see if that makes any difference. Try checking the FIVR Disable and Lock Turbo Power Limits option.

The OTHER part of EDP OTHER is not well documented by Intel. It is not publicly documented at all. It could be anything causing this. It is definitely not normal to see this type of throttling when a CPU is lightly loaded / idle. Some laptops set hard power or current limits internally and these cannot be adjusted by using ThrottleStop.

Was it always limited like this when charging the battery? Either the battery or a power related sensor might have failed and it is sending constant throttling signals to your CPU. If this is the case, the only fix might be a new battery or a new motherboard.

 

[Rackasaurus]

Sorry for the late response.

The TPL was set to 26 by default, setting it to 256 didn't seem to do anything.

The laptop had been working fine since Easter (when I got it) and has suddenly started having issues about 3 weeks ago and as I said I used multiple power cables and none of them changed anything, so I doubt the cable sensor is to blame.

I decided to open up the laptop to see if everything internally was working fine, and the CPU fan and other core components seemed okay, as was confirmed by a diagnostics check. However, what I did find was a faint hot/burning smell coming from a component which I couldn't identify, but it looked somewhat similar to RAM sticks, except placed horizontally on the motherboard. :/ This was also paired with a faint buzzing noise coming from the same location. I'm quite confident that they weren't RAM sticks as I was sure I could identify them separately. After I put everything back together, the buzzing noise and smell went away, but my USB ports started failing to recognise USB devices, however this also fixed itself shortly afterwards.

(If I manage to, I'll post a picture of my internals with a marker for where the noise/smell were coming from)

Getting a new motherboard is really a last resort to me, but if that's the only way to fix the throttling then what else can you do.

As I said, I have never really stripped apart laptops before, just desktop PCs, so a few parts were unrecognisable, including the noise generating one. This is also why I am very grateful for your reply and this entire forum site, as guides online about laptop problems didn't help as my laptop seems to be quite unpopular - not well documented. For specifics it is a HP Laptop 15s-fq1002na, with CPU listed in the first post.

 

[unclewebb]

The TPL was set to 26 by default

My suggestion was to set the PP0 Current Limit to a big number like 256. Did you change one of the power limits or did you change the current limit? Post a screenshot of the TPL window.

 

[Rackasaurus]

Here's what I've done.

Oh sorry I've realised what you meant. I've changed the PP0 current limit to 256, and still haven't noticed any changes in CPU speed.

Here's a screenshot of my CPU speed when unplugged and doing light tasks like running 1 tab in chrome along with notepad and TS.

Any comments on the noise/smell or is that unrelated?

 

[unclewebb]

When testing, did you try multiple power cables or did you try different power adapters? Some of these come in two parts, there is a separate cable and separate power adapter. Make sure that you have tried a different power adapter.

When plugged in and idle at the desktop with only ThrottleStop open, does Limit Reasons still show EDP OTHER throttling in red?

Open up the TS Bench test. Select a 1 Thread test and push Start. With a load on your CPU, is EDP OTHER still red?

When running on battery power and idle at the desktop with only ThrottleStop open, does Limit Reasons show EDP OTHER throttling in red or is this OK on battery power? You can click on the headings in Limit Reasons to clear any previous throttling information out of the CPU.

Repeat the TS Bench test with a 1 Thread load while on battery power. Any EDP OTHER throttling?

If you are only seeing EDP OTHER throttling while plugged in, my best guess is that either your power adapter has a problem or the power circuit on your motherboard has a problem. If something smells burnt inside your computer then there is a good chance that your motherboard will need to be repaired or replaced. Most laptop motherboards are well integrated so replacement is probably your only option.

Edit - When posting images, check out the Paint program. It has a feature so you can crop your pictures down to size. If you want to take a screenshot of only the Task Manager, click on the Task Manager to highlight it, then use the keyboard combo ALT+PRINT SCREEN. This will put an image of the Task Manager in your Clipboard. Open up Paint and press the Paste button or press CTRL+V to paste this image into Paint. Now you can save or edit this image however you like. You can also try using the Snipping Tool if it is still available in your version of Windows. Makes taking screenshots much easier.

 

[Rackasaurus]

Plugged in with only TS open:

EDP other turns red on all three columns when on a 1 thread test with a fair load on my CPU.

When unplugged and idle, EDP other turns red on CORE and RING and yellow on GPU, so it's the same as when plugged in. I did clear the previous throttling data out. Although I've noticed that they flash to yellow quite a lot, which didn't happen when plugged in. The 1 thread test also showed the same results, except with the 'GPU' column flashing between yellow and red.

I guess getting a new laptop may be my only choice now, though my current one does have a warranty, however this has likely been voided.

I'll probably keep my laptop as I'm getting a new desktop PC, so I'll do most of my work and gaming there, anyways, thank you for your help, I came here looking for answers and was not disappointed.