If your computer have 2GB ram(Or lower),you are strongly recommended to download the 32bit operating system as it will be faster than 64bit operating system as I tried two of them by dual booting in my laptop(Dell Inspiron 1420 of course!)before I upgrade the ram.
Here is the full instruction of updating your drivers:
*Again, if you think they are unsafe just check it with your antivirus
Download Double Driver - MajorGeeks
In case the link doesn't work, download it from here by clicking this link,right click the folder and press download it:https://drive.google.com/drive/folders/1ZaJhEStrZxNBq-N_EpqN9w_GQDoBbjXu?usp=sharing
Because it is a zip file,right click on it,press "extract all...",press "extract".Now, click the "Double Driver" folder, and you will see six things inside it. Right click the application with the name "dd",press "Run as administrator", press yes,
Download the drivers from my google drive by clicking this link,extract it like I taught you just now,right click on the folder named "x64 Double Driver" and press download:https://drive.google.com/drive/folders/1TMGU5QKWww_yP2r3fr2OuADeaBZPXVSe?usp=sharing
Going back to the Double Driver app, press the "restore" button, and then press "Locate backup". Now, press "Other location" ,press the grey box beside it, locate the unzipped folder named "x64 Double Driver", press ok, press the arrow select button which is located beside "select" button's right hand side, press "All", press "restore now", press "ok" and wait for a while. Press next, and in the middle of the installation it will ask you whether you trust the publisher or not and you should press yes to continue with the driver update process. When it done it's job, some drivers can't be install so take note and scroll the name list and write down the names with the cross mark. Press the finish button. Restart your computer, and now remember to google the names that won't install. Remember the DISM and Powershell Drivers I mentioned just now in the introduction tab? Yes, they are here to rescue! Using Device Manager(again google it if you don't know where to find it),select the driver that can't be updated using Double Driver, right click on it, press update driver, press "Browse my computer for drivers", press the grey "Browse" button, and locate where you downloaded it(download it here by clicking this link,right click on the folder "x64 DISM Drivers" and press download,extract it as the above instruction: https://drive.google.com/drive/folders/1QeD_BgxWaL7LUoUq95k-YF8Ls7DFH9_-?usp=sharing,you will always need to restart your computer to make the drivers work. If it says that "The best drivers for your device are already installed",use the same method just now but this time download it from here (Click this link,right click on the folder "x64 Powershell Drivers" and press download,extract it:https://drive.google.com/drive/folders/1hHYu3xY5cn7I_r7BnAEo-7v53NmSABCz?usp=sharing),and again you need to restart your computer to let the drivers work. Contact me if you are having trouble updating your drivers in the "Contact Me and My Info" and I will be happy to help you. I hope that you will email me as well if you find my drivers collection nice as I use weeks to collect them and not counting the bundlers and PUPs I encounter when downloading their risky driver update software......
Special note : If you have bluetooth adapter(built in) and speakers(100% got), you need .exe files to install the drivers.
Bluetooth driver : https://dl.dell.com/FOLDER94296M/1/R226750.exe (set the compatible mode to Windows 7 if your current OS is Windows 8 and above).For Windows 11 and 10 installation method is different,see Dell Inspiron 1420 Drivers - Tips and Tricks For Dell Inspiron 1420 (google.com) no.8 .
Sound driver : https://dl.dell.com/FOLDER96136M/12/R171789.exe (set the compatible mode to Windows XP SP3 if your current OS is Windows Vista and above)
I think these drivers will work in Windows 11 as well but there may be some compatible issue,as I never tried it before, as well as other operating system except Windows 10,which I am currently using. (8 February 2022 Update) These drivers is tested on Windows 11 and is working fine on Dell Inspiron 1420!