Vostro 15 7590, Windows 11. Logitech USB Input Device: wireless mouse. After turning OFF Bluetooth under Bluetooth & devices, then allowing sleep mode to kick in, the Windows Desktop Manager surpassed 7 GB of memory which increased fan speed. Laptop's CPU surface was extremely hot while in sleep mode, thus fan was going at high speed. Registry entries pointed to Bluetooth device. Turned ON Bluetooth and no more problems in sleep mode.
Few weeks before the BIOS was automatically updated to 1.12 version but it was worse. The laptop was much more noisy and warm. So I downgrade the BIOS to 1.10 again but still having the problem. I have two problems with my laptop: 1. After using laptop Dell G15 5511 for few weeks since last dell support i noticed a very irritaing problem with fans. Laptop is generating more noise than before. Fans are working even when I browse the websites. Is it so demnading task for the laptop that It cannot work without that noise of fans? I think the problem have started few months earlier when due to another problem I was forced to update the BIOS. So now I have the 1.10 version of BIOS. Since i have updated the BIOS the laptop is more noisy and is warmer. Before updating the BIOS the laptop was really quite and cool. 2. I think the Sleep mode in my laptop is not working. When I've closed the lid of the laptop I noticed the fans briefly spin up every couple of seconds during sleep. One more thing is it normal that laptop is still contected to the Wifi during sleep mode (I've checked this on my router)? - That's why I think the sleep mode is not working. Please give me any solution.  
Dell G15 5511 - fan and sleep mode problem