power issue making performance worse

[kaka_tgouku]

Hello,

I'm reporting a performance regression on my HP 15s-fr5007TU (Intel Core i5-1235U) that started immediately after updating the BIOS from version F.22 to F.28 Rev A.

Before the update (BIOS F.22): CPU would boost normally under load, reaching around 1.4GHz+ during gaming and other sustained workloads.

After the update (BIOS F.28 Rev A): CPU clock speed stays pinned below 1GHz (typically 0.4–0.8GHz) during any sustained workload, including gaming. This happens consistently, with no exceptions, regardless of Windows power plan settings or default BIOS power settings.

Using HWiNFO64, I confirmed the following:

• PL1 is configured at 40W and PL2 at 55W — both look correctly configured, not unusually low
• However, VRLimit, IccMax, and PL4 all show 100% (constantly asserted), even at idle
• CPU package temperature stays low throughout — this is not a thermal throttling issue
• The behavior is consistent and does not clear on its own; it is present continuously under any load

Since PL1/PL2 are configured normally but VRLimit/IccMax/PL4 are constantly maxed, this points to a current-delivery/power-management regression introduced specifically by the F.28 Rev A firmware, not a hardware fault or user configuration issue.

I attempted to roll back to BIOS F.22 to confirm this, but HP's rollback protection blocks downgrading past this update.

Could you please:

1. Escalate this as a known/reported issue to the BIOS/firmware team, and
2. Let me know if a corrective BIOS update is planned, or if there's another supported path to restore normal power delivery behavior?

Happy to provide HWiNFO64 screenshots, sensor logs, or a screen recording of the clock behavior during load if useful.

Thank you.

[kaka_tgouku]

there is a model not detected correctly my actual laptop model is 15s-fr5007tu notebook

[NonSequitur777]

@kaka_tgouku,

Welcome to our HP Community forum!

Hello, and thank you for providing such a detailed and technically useful report. The immediate change in CPU behavior following the F.22 → F.28 Rev A BIOS update is significant, and your HWiNFO observations certainly warrant further investigation.

There is, however, one important point I would like to verify before we conclude that F.28 introduced a VRM/current-limit regression.

I checked HP's published BIOS documentation for the 15s family, and HP identifies the 15s-FR5xxx family separately from the FR0xxx/FR1xxx families. HP's published releases show the FR5xxx series receiving F.18, subsequently F.20, and later F.22 BIOS releases, whilst F.28 is associated with other FR-series families.

Because your system is an HP 15s-fr5007TU, I therefore want to verify that F.28 Rev A is actually the BIOS intended for your exact machine rather than assuming that the version number alone establishes compatibility.

Please provide these details:

Open System Information (msinfo32) and provide:

• System Model
• System SKU
• BIOS Version/Date
• BaseBoard Manufacturer
• BaseBoard Product
• Processor

Also, please provide the exact HP SoftPaq number or filename of the F.28 Rev A BIOS package you installed.

That information is important because I don't want to recommend a recovery procedure until we establish that the firmware currently installed is the correct HP firmware for your exact product/SKU.

About the HWiNFO readings:

Your observation that VRLimit, IccMax and PL4 are continuously asserted is certainly interesting. However, I would be a little more cautious about interpreting those readings as proof that the physical VRM is actually hitting a current limit.

HWiNFO is reporting processor/firmware telemetry. A firmware configuration or telemetry problem can potentially produce apparently contradictory readings. In other words, those indicators establish that the processor is reporting a limiting condition; they don't, by themselves, establish exactly why that condition exists.

The much stronger evidence is the before-and-after behavior you have documented:

BIOS F.22
→ normal CPU boost/performance

BIOS F.28 Rev A
→ immediate and persistent 0.4–0.8 GHz behavior under sustained load

CPU temperature
→ remains low

PL1/PL2
→ reported at reasonable values

Windows power plans
→ no meaningful effect

If F.28 Rev A is confirmed to be the correct BIOS for this particular 15s-fr5007TU, that would make a BIOS-level performance/power-management regression a very reasonable possibility.

One additional test would be extremely useful:

With the original HP AC adapter connected and recognized, run a sustained CPU workload and capture HWiNFO showing:

• CPU utilization
• CPU clock
• CPU package temperature
• PL1
• PL2
• VRLimit
• IccMax
• PL4

Please also confirm whether the severe throttling occurs:

1. Only while connected to AC power, or
2. On both AC power and battery

If the processor reaches high utilization while remaining around 0.4–0.8 GHz, with low temperatures and the same limiting indicators asserted, that would provide particularly strong evidence that we're dealing with a firmware/power-management limitation rather than conventional thermal throttling.

Regarding the BIOS rollback:

I would not recommend attempting to bypass HP's BIOS rollback protection with an unofficial BIOS, modified firmware, or an SPI-programming workaround. That could turn a performance problem into a non-booting motherboard.

If F.28 is confirmed as the correct firmware for your exact system and the regression can be reproduced, the appropriate course is to document it as a firmware-induced CPU performance/power-management regression and pursue HP's supported BIOS/firmware path.

The timing you have documented is certainly compelling, and I think you have provided enough information to justify investigating this further. I just want to verify the exact system SKU and F.28 SoftPaq before we attribute the problem to that BIOS with confidence.

Kind Regards,

NonSequitur777

[kaka_tgouku]

thank you for your reply  these are the specifications
system model-hp laptop 15s-fr5xxx
system SKU-6P130PA#ACJ
bios version/date-AMI f.28, 21-04-2026
baseboard manufacturer-hp
basebaord product-8A20
Processor-12th Gen Intel(R) Core(TM) i5-1235U, 1300 Mhz, 10 Core(s), 12 Logical Processor(s)
with original ac adapter connected under load:-

cpu utilization:100%
cpu clock speed:0.59ghz
cpu package temperature: 68 celsius
pl1:21.4W
pl2:26.5W
on original hp battery:

cpu utilization:100%
cpu clock speed:0.52ghz
cpu package temperature:66 celsius
i alos had many system freeze/BSOD's since the bios f.28 update and  i can't post the vr and iccmax  values because the system downclocks so fast that i cannot see it before it comes and it also isnt showing me the current values because of restriction.