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UM425IA - CPU 4500U gets stuck on 0.38GHz

PorteX
Star I
System: Windows 10
Battery or AC: Battery
Model: UM425IA
Frequency of occurrence: 2-3 times a day
Reset OS: No
Screenshot or video:
BIOS: 309
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Detailed description:
Hello,
I have a problem with my laptop. The CPU gets stuck 2-3 times per day at 0.38Ghz. It helps when I close the lid (when I put my laptop to sleep) and open it again - after that CPU frequency is back to normal. I believe it happens only on a battery. My laptop is running on the last available BIOS 309.
I'm not sure but I think I didn't have that problem on BIOS 307 (at least not that often).
It is possible to downgrade the BIOS to 307? Or do you have any other solution to this issue?
11 REPLIES 11

PorteX
Star I
Hi,
I tried it but it didn't help. Today it happened again, this time when I was watching a movie using VLC (VLC media player) When it happened I had about 68% battery.

Blake_ASUS
Community Legend II
Hello PorteX,
I have reported this case and asked for more advice about this.
Thank you.

PorteX
Star I
Thanks,
I not sure if this will help find the root cause, but I have found I can unstuck the CPU just by disconnecting the AC adapter (when AC adapter is connected) or by connecting AC Adapter (when the laptop is running on battery).

Blake_ASUS
Community Legend II
Hello PorteX,
Yeah, that's one way to solve this kind of issue.
Thank you so much for the information.

Blake_ASUS
Community Legend II
Hello PorteX,
May I know which fan mode did you set in MyASUS ?
Thank you.