Use a specialized RAM cleaning solution and follow proper procedures to remove residues efficiently.
Use a specialized RAM cleaning solution and follow proper procedures to remove residues efficiently.
There IS a 100% sure way to guarantee complete computer security. Step 1. Don't ever go online Step 2. Destroy both the drive and the RAM every time its used. By performing these two easy steps, you can guarantee yourself that no one can obtain your data. Everything else is at best only 99.99+% of security.
Your worry seems unnecessary because a virus could already be present on the hard drive regardless of the RAM.
The only certain methods I can think of are extremely damaging. However, let's be honest—how do you realistically imagine this attack being used against you? The actual physical forms of this threat are mostly limited to actions by government bodies and lab researchers, and the latter would simply follow the advice from a certain xkcd comic.