1. Your CPU is supported. Windows processor requirements Windows 11 supported Intel processors | Microsoft Learn 2. Go to the BIOS and turn on PPT. 3. Check if your hard disk is formatted with MBR or GPT. Windows 11 likes GPT. Control Penal -> System and Security -> Administration Tools -> Computer Management -> Disk Management Right Click on Disk where your Windows 10 is and select Properties and click on Volumes tab. The Partition Style: GUID Partition Table(GPT) If you see this, it's no good. Do a PC Health check and it will tell you which is not meeting Windows 11 requirement. Check on Youtube on how to convert from MBR to GPT. First and foremost, backup your data. If the PC health check is OK, install Windows 11 on top of Windows 10 and keep all your applications and data files.
True but irrelevant from a OS perspective. If you do just a quick format erasing all partitions, everything is rewritable and nothing else needs to be done.
Even if you go for a new NVME drive (which will eminate any "zero track" conflict on the drive on a W-11 fresh install , I'd again suggest doing a Low Level Format on your old drive. You might resurrect it to become useful as a backup, if nothing else. I don't think your CPU has anything to do with your issues. I'm thinking "drive" and mobo/TPM. Suggest focus your efforts there, for now.
Looks like TPM is likely your problem. I found this on a google search: TPMs are efficient alternatives to older methods of securing Windows PCs. In fact, since July 2016 Microsoft has actually required TPM 2.0 support on all new PCs that run any version of Windows 10 for desktop (Home, Pro, Enterprise, or Education). Likewise, Windows 11 will only run on PCs that have TPM capabilities. On a Microsoft forum: You won't be able to upgrade from Windows 10 to Windows 11 without TPM 2.0. However, if you have at least TPM 1.2, you can do a clean install and it won't enforce that. It is not recommended, but it will let you install that way anyway and just cannot guarantee all features will work properly. Looks like it might work if you do a clean install. That is what @Scataphagos was saying, I believe. Your processor is almost 7 years old so Dell probably didn't put TPM 2.0 on those motherboards. It is surprising since TPM 2.0 has been out 2015 but maybe your Dell Workstation is even older.
Found the Dell support page to upgrade your Precision 7820 to TPM 2.0: https://www.dell.com/support/kbdoc/...-that-can-upgrade-from-tpm-version-1-2-to-2-0 Looks like the 7820 is on the list: Precision Tower 7810/7810XL * Precision Tower 7820/7820XL * Precision Tower 7910/7910XL * Precision Tower 7920/7920XL *
I took my machine to a local Dell Service Centre that I have used previously. They inspected the machine and ran multiple tests and told me there was no problems with it but recommended a fresh install and they would then upgrade the machine to Windows 11. Got the machine back on Friday. Over the weekend I set it up and it wasnt working. The machine has a AMD Fire Pro W7100 graphics card. I have got 4 monitors connected to the quad card. I removed 3 of the display port cables which attach to the graphics card. It worked with 1 monitor. So I then tested the other 3 cables/monitors and each time the machine was working with 1 monitor. Then I tried to see if it would work with 2 monitors and it stopped working again. This is telling me its a graphics card issue, but a previous Dell T3500 machine I owned had issues with a graphics card but it turned out to be a motherboard issue. To say I pissed off is an understatement.