Event ID 37: kernel processor power and problems shutting down

[NP82]

Changes

2 weeks ago I:
-    cleaned my notebook and renewed thermal material (thermal paste and thermal pads)
-    replaced the HDD with a Samsung 128GB SSD: I can only use it in IDE mode, because the BIOS has no option for switching to SATA AHCI
-    removed the DVD drive (I did not replace it)
-    renewed the USB/power connector board (HP spare part number is 449454-001 and the replacement has exactly this number)
-    renewed the external PSU with a universal notebook PSU, I set the voltage to 18.5 V

I did not re-install Windows 7 after these changes, but just cloned the HDD to the SSD.
Then it worked for 2 weeks without any problems.
The temperature of CPU is usually < 60°, GPU and chipset <= 80° even under heavy load, that is less than before.

1.1 Initial problems
1 week ago suddenly the notebook froze with a black screen when shutting down, switching to standy or hibernation. After some minutes a blue screen "driver failure power state" appeared.

1.2 Solution attempt: Windows reinstallation
I hoped this problem was only caused by not re-installing Windows 7 after the hardware changes.
Hence I re-installed Windows 7 and the driver from the NVIDIA website for NVIDIA GeForce 7150M/ nForce 630.
I also tried the driver provided on the HP Pavilion dv6610eg website. The problem still existed. However, the BSOD did not appear again.

Then I removed the battery from the notebook and inserted it again and shutting down, ... did not freeze anymore.

2. 1 New problems

Mostly these messages appeared in the Windows event log:
 -       event ID 37: kernel processor power (the speed of the CPU is limited by the system firmware)
 -       event ID 19: WHEA logger (processor core, exception when checking the computer, unkonwn error)
 -       event ID 18: WHEA logger (processor core, critical hardware failure, unknown error)
            once there was a cache hierarchy error instead of an unknown error
 -   event ID 12: HAL (memory was damaged by the system firmware)

2.2 Solution attempt: Update BIOS

I updated the BIOS from version F.32 to F.34 from the HP website.

The HP website also mentions this:

"Fixes an issue where the system would unexpectedly stop responding a 0x124 warning window would appear when the notebook was powered off abnormally then restarted."

Now the WHEA logger did not appear again.

3.1 New/remaining problems

However, event ID 37 is still there and there is a new event ACPI event id 13.

When I tried to shutdown the notebook after updating the BIOS the screen got black, but it did not turn off. I powered it off hardly and restarted. It started without problems, but the problem shutting down remained. So I removed the battery and now shutting down seems to work.

Event ID 37 still exists and the perceived performance of the system is lower than before. Furthermore I ran a benchmark with 3DMark06, because it is the only bechmark for this CPU, that I could find reference data for. In the internet this CPU reaches about 1300 points (http://cpuboss.com/cpu/-9223372036850253136), but my notebook's CPU only reached about 800.

What can I do?

I started Prime95.

After some time (~20 minutes) one of the two workers reported this:

Self-test 768K passed!FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.

3.2 Successless solution attempts
-    I can not change any power options in the BIOS, because my BIOS in general provides very little options.
-    I tried my previous external PSU again, same behavior.
-    Running a stress test with HeavyLoad (CPU, SSD, GPU) for almost 2 hours did not cause any problems or event log entries.
-    MemTestx86+ reported nothing after running it 2 hours.

- Steps described in this article, except from disassembling my notebook: http://answers.microsoft.com/en-us/windows/wiki/windows_other-system/bugcheck-code-124/98c998d2-447a...

- Windows energy saving plan is set to maximum performance.

Attachments

https://1drv.ms/f/s!AvN-6zW5d3EPgj-uro8BLYxfVngI

- Windows event log filtered for warnings, errors and critical messages.
- filtered event log
- HWinfo log
- HWinfo sensor log
- Minidump caused by the BSOD "driver failure power state" before re-installing Windows 7, there were a lot minidumps looking like this.
- Minidump after re-installing Windows 7, I do not know why this minidump was created at all, because I have not seen a bluescreen and it is the only one.

- msinfo file