I have a Lenovo 330-15IKB (Type 81DE) Laptop (ideapad).
After I updated the the BIOS version the laptop became very slow and I want to revert back to the old BIOS version and I can't find it to install.
the version is 8tcn45ww
Can anybody help?
To be honest, you really shouldn't upgrade BIOS unless it is through the manufacturers site, as getting it elsewhere can get you a newer version, sure, but that doesn't mean it will work with your computer. Just because there is a new version doesn't mean it is what your system needs. I say that because so many think oh new version I have to get it, but that isn't a good idea.
I would suggest you visit the Lenovo site and go to their support section. They should have the correct version for your computer there which you can then install.