Hyper

I got a fan malfunction on my (similar) 7520 when it was new. Dell replaced it under warranty. They replaced the whole fan assembly unit, cooler and heatpipes included. This is how the malfunctioning fan sounded.

I gave my M4800 some love with a 512GB mSATA boot SSD, 4TB SATA 2.5" SSD and a fresh install of Windows 11 instead of Windows 7. BIOS + MBR + Windows 7 Pro x64 to UEFI + GPT + Windows 11. I'm happy to report that Windows 11 works fine on this system. You need to use the system requirements check bypass in order to install the OS. I used mostly the Windows 10 x64 drivers from Dell except for the AMD FirePro M5100. Here I got the drivers directly from AMD. Issues I had was a BSOD with the Intel Rapid Storage driver installed. I uninstalled the driver and used the Windows-provided storage driver instead. And when I disabled switchable graphics in the BIOS I got a black screen in Windows. So switchable graphics needs to stay enabled. With this the system works very nicely and stable.

I would not go that way. Li-Ion batteries are a bit risky. Even brandname original batteries of major notebook manufacturers have had serious problems in the past. 3rd party batteries are riskier because you don't know to which quality and safety standards they are manufactured. They probably will be fine, but it's a gamble. And if you're on the losing end of the gamble there can be fire. Just buy original Dell ones for your laptop.

I went through quite a hell getting an additional 16 GB of RAM for my Dell Precision 7520. I wanted to upgrade the memory from the factory-installed 16GB DDR4 2666 to 32GB. The ordered Crucial modules, recommended by the Crucial configurator did not work however, so I contacted Dell support via chat Dell recommended me other (Dell branded) memory that I ordered but also were incompatible. After contacting Dell support again, they recognized that they recommended the wrong modules and told me that the only compatible memory modules are the ones that I already had installed. (Dell F875V / Kingston XF875V). Small problem: they were nowhere to be found in The Netherlands. I ended up buying them from eBay and finally I got a working memory upgrade. I'm quite disappointed with this lack of memory compatibility. With other Dell computers I never had issues to install additional 3rd party recommended modules. Perhaps the 7520 is a bit special because the Intel chipset officially only supports up to DDR4 2400 memory. So it can be a bit tricky to buy a configuration with minimal memory and buy the memory elsewhere.

I'm in the process of reinstalling my Dell Precision M4800 from BIOS/MBR/Windows 7 to UEFI/GPT/Windows 11. With mixed feelings because Vista and Windows 7 are my all-time favourite Windows versions. But Windows 7 ESU is on it's last legs and I got some BIOS/MBR related problems so it is time to bite the bullet. Maybe a good thing because I had years of issues with the AMD FirePro M5100 + Intel HD Graphics drivers on Windows 7. I only could find one version of both that properly worked together. Perhaps AMD driver support for Windows 11 is a bit better. I'll have to see about that. Already got my first BSODs but this time with the intel Rapid Storage Drivers. Uninstalling them was the solution here. (Inaccessible_boot_device) To be continued.