What to use to check old used computers for malware

What steps should I take after getting a used computer to ensure there is no malware without risking my other machines?
I want to start taking old computers off people's hands that either don't work anymore or they just don't have any use for anymore. The goal is to mainly salvage them for parts to use for other projects.


https://redd.it/1pxrmmh
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Is it worth buying

https://redd.it/1pxrc6x
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windows update loop

it’s been stuck on 7% for almost an hour now. i looked up how to fix it and i have to get to the windows startup repair first, by turning my computer on and off 3 times

, which does not work?? i tried it 5 times now. can someone please help me out here im losing my mind

https://redd.it/1pxv0wp
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Secure Boot Problems

Hello,

I am currently having problems activating Secure Boot in Windows. I have an MSI motherboard, CSM is disabled, Secure Boot is set to Enabled in the BIOS, and Secure Boot Mode is set to Standard or UEFI. The hard drive is also set to GPT. TPM 2.0 is active.

However, when I run the command [msinfo32.msc\] via [Windows key + R\], Secure Boot is shown to be disabled. When I check via Powershell with the command [Confirm-SecureBootUEFI\], it also shows [False\].

To be honest, I'm out of ideas. Can anyone help me?

Thanks!

https://redd.it/1pxxw1e
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Monitor and PC not communicating

I recently got locked out of an old PC; took it to a local tech, and they bypassed PIN for me. Bought a new computer; it connects to old monitor just fine. I only have the one monitor, so I want to reconnect it to old PC to get data files onto a flash drive. I plugged in theHDMI cable, and the monitor is scanning for input, but won’t display the opening screen.

I’ve tried both HDM slots, made sure all connections are tight, and restarted both PC and monitor several times.

Any suggestions? The local tech is on winter break, or I’d ask them.

https://redd.it/1pxzk9x
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Dell Optiplex 3060 gaming desktop
https://redd.it/1pxy80f
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Looking To Get Rid Current Rig

https://redd.it/1py1kd1
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I need the gooch collector
https://redd.it/1py2hdw
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Which of these 2 are better

https://redd.it/1pxxlow
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My PC died & I don't know what's wrong. Pls help
https://redd.it/1py6oqi
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need help finding case

https://redd.it/1py9mf6
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Books about telecommunications and computer networks from the '80s to early 2000s

Ive always been interested in telecommunications and how things worked pre internet. Any book recommendations?

https://redd.it/1pyc30x
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