No you cant
To cool the engine in order to prevent overheating.
Overheating..
YES
To lubricate the motor to prevent overheating and wear and tear on the engine
The three factors are : Using wires of specifications that match the power requirements of motherboard . Use the fan or heat sink properly. Do not use faulty devices with mother board.
If your system is overheating then increase the fan speed of you system in BIOS option at the start of the system. Turn on AC in your room. Use a fast fan in cabinet of CPU. If serious heating is there then open cabinet cover of CPU. (Do not touch naked wires or motherboard this could lead to electric shock)
You can prevent theft of data from a computer through using strong passwords.
Use a firewall and a good virus scanner.
The reason why you would use a computer cover is to protect your monitor, CPU, keyboard, and printer from computer damaging dust. Using a computer dust cover also will protect your computer from harmful particles that can increase overheating.
to make an insulator prevent ice from not melting is to use tinfoil and dirt.
Security
To prevent virus in computer you can use some antivirus apps and being very careful about clickable links.