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I have a fairly old laptop - an HP Elitebook 840 G5.
When running Windows 10 the machine could keep up with modern workloads, although often the machine would be working hard with the fans going full speed.
After installing Windows 11 the performance is very bad. Simple things like web browsing and using MS Teams are very slow and laggy.
However, the cooling fans never go fast any more and the machine does not get warm. It's like Windows 11 is incapable of modulating the CPU clock speed or use the full capabilities of the processor.
I've tried googling this but haven't found any useful guidance. I'd love to get this machine working as fast as, or close to as as fast as it was with Windows 10.
Is this a known thing with steps to take in the BIOS or Windows to improve things? I've tried forcing it to use all CPU cores in the boot configuration in msconfig.exe
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Thanks. I checked the power profile settings - everything in maximum performance, CPU 100% etc. While closing background tasks helps, it's not the root cause - it's not the overall workload of the machine that's the issue, it's its seeming inability to make use of the available system resources.
Normally, you'd just go to power options (in Window 11 that's in control panel) and then use high performance and/or make sure CPU min and max are both at 100% in the advanced power settings. That would be it on any normal working computer.
I have Windows 11 on an old and terribly slow laptop (the CPU so bad it is constantly the bottleneck at 100% usage) and its performance is not noticeably any different than Windows 10 was. This is the same. But, I did some tweaks such as the above.
Also disabled indexing to an extent. Possibly other things. Indexing for instance is a slight negative on performance. When its gone off the tracks it might even bring a powerful computer down.
Some other things such as putting GPU to performance mode, if the laptop has a HDD then switch it out to an SSD. Certain Windows security settings can make performance worse. Check what 3rd party background apps are running. 3rd party AntiVirus applications can really drop performance. Etc.
