You will have to ask toshiba what processors are supported by their bios. Then, you can select from those. And, this is only possible if your t8100 is NOT soldered to the motherboard.
Also, your processor is from 2008. You will not see any significant performance increase.
You should plan on purchasing a new or newer system, with an 8th gen or later processor.
Doc (not an Intel employee or contractor)
[Windows 11 is the new Vista]