7420 - sound issue, sleep mode issue, fan issue

Question

hi

it is really disappointed to write and be asking for help on not one but multiple issues on a newly purchase dell laptop model 7420. fyi i have tried everything suggested on forums and support sites

1) unless i reset the power plan, the laptop doesnt go into either the hibernate mode or the sleep mode -have updated the bios (latest), ran the diagnostic tool (no issues)

2) even with a CPU o 15% utlization, the fan kept running, I adjusted the fan setting in the bios, which solved to problem to some bit, however whenever i connect to an external screen via a USBC to HDMI adapter, the fan wont running

3) when the laptop comes back up after a sleep mode, the speakers (built in or external) wont work until i restart the two Windows Audio Services

Am I the only one having these problems

I wish i had invested in an any other laptop

can anyone out there help

ejn63 · Answer

Since this was a used purchase (it's a 2021 model), was Windows correctly installed on it or was it obtained with an existing install? All of these are software/Windows problems. You can either return the system to your seller or start with a clean install of Windows, followed by updating all the needed drivers.

user_9ef58d · Answer

@ejn63​  thank you for your reply all applications are running smoothly i have about 500 tabs opened on chrome/firefox i had reinstalled the Realtek audio drivers.  didnt help the windows is updated to date i have ran the diagnostic tool which doesnt indicate any driver problem how do i go about reinstalling the windows?

ejn63 · Answer

That many tabs means the memory is probably being throttled -- start by resetting your browser and keeping a more reasonable number of browser tabs open.

https://www.dell.com/support/kbdoc/en-us/000124379/factory-reset-restore-or-reinstall-microsoft-windows-on-a-dell-computer

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7420 - sound issue, sleep mode issue, fan issue

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