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August 19th, 2025 14:47
Processor Speed locked at 0.79Ghz (same with base speed)
Hello,
I have a Dell Optiplex 3070 Micro that I bought some years back.
I never really got around what my computer is running at so I continued with my work.
Now after installing some graphic design suite, I noticed it opens and runs slower than my friend who's rocking an i7-7200U and the suite runs faster than mine (I have an i5 9500T that should run at 2.2Ghz)
Some points to note:
1. It's a refurbished unit so I don't have ownership of it and can't contact the seller (they disappeared)
2. I got to Dell OOW Support and they told me I have to pay (must) in order for that issue to be resolved.
3. I have a PSU that is 65W from HP and that's what came with it (idk if that's the throttle culprit or not)
Please let me know how to fix this.
redlabs
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August 24th, 2025 12:55
So I'm making this as a final post to this thread,
I went back to BIOS and checked the event logs, cleared the Chassis Intrusion System Warning and rebooted,
Nothing popped on the logs again,
I got my eyes to POST behavior and got to AC Adapter Warning and turned it on,
The next boot was the AC Adapter warning popping up, giving me the root of problem.
Thanks to @ejn63 and @redxps630 for helping me troubleshoot this.
ejn63
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August 19th, 2025 15:08
Start with replacing the power supply with an OEM Dell unit. It will cost you less than a single paid technical support call and stands a good chance of solving the problem.
redxps630
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August 19th, 2025 23:30
Dell oem AC adapter for 3070 Micro
65 Watt AC Adapter
Made by: Chicony
65 Watt AC Adapter
Made by: Lite-On
typically when one uses same watt HP adapter on Dell laptop there is a warning message from BIOS. use oem adapter is recommended.
redxps630
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August 19th, 2025 23:50
my experience w Dell laptop locked at very slow base frequency is possible bios issue. ejn made a good point that when a "wrong" adapter is detected, bios kicks in the self protection mode to run cpu slow to protect power usage. thus try a genuine good adapter is good idea. you should also check the current bios screen to see if a wrong adapter error msg is shown there.
redlabs
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August 20th, 2025 06:07
@redxps630 How can I check the BIOS screen?
redxps630
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August 20th, 2025 15:16
press F2 when power on
redlabs
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August 22nd, 2025 13:57
@redxps630 I can't see any information on Power in System Information in BIOS
redxps630
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August 22nd, 2025 23:36
go inside bios event log to see if it lists non-genuine AC adapter is present.
https://www.dell.com/support/manuals/en-lk/optiplex-3070-desktop/opti3070_micro_setiup_specs/system-logs?guid=guid-378c1f7d-98e4-4d8c-b672-afe41c0b2f55&lang=en-us
(edited)
redlabs
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August 23rd, 2025 07:43
@redxps630 but I still need a genuine power supply to restore CPU speeds right? Or the issue is something else?
redxps630
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August 23rd, 2025 13:42
edited my last reply.
redlabs
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August 23rd, 2025 13:55
@redxps630 event logs just say the cover was recently removed..
redxps630
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August 23rd, 2025 14:03
replace cmos battery w a new one then clear motherboard cmos.
https://www.dell.com/community/en/conversations/optiplex-desktops/montheboard-3070-micro/647fa19af4ccf8a8de6e2166
you can still try a genuine Dell adapter but be prepared it may make no difference. If no other resort, try ThrottleStop to force cpu out of low frequency.
(edited)
redlabs
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August 23rd, 2025 14:05
@redxps630 so I disable BD PROCHOT in ThrottleStop?
redxps630
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August 23rd, 2025 14:06
edited my last reply. I do not recall the details of throttle stop but it worked on a Dell laptop that had CPU run at low frequency.
redlabs
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August 23rd, 2025 14:14
@redxps630 disabled BD PROCHOT, no change. I haven't saved the changes so I think replacing the PSU is a good chance of solving this issue.