You cannot do so. The basic reason is Ram acts as a temporary storage device to store your operating system and other essentials. Where as hard disk is slower and cannot be used for same to process.
No one can able to start the system without installing RAM.
It's Equivalent to start a car without petrol.
The computer most likely will not boot,RAM is how data gets from point a to point b, if theres no highway for data to travel(RAM) how can the computer boot?
Actually By Default this is present in BIOS(ROM) and at the boot time Operating System loads it to the RAM.
basic input output system BIOS needed for a computer to find the input and output devices which are connected to it... such as ram keyboard mouse speaker system monitor etc etc... the bios serves as instruction on what to do after the processor is turned on. Such as access the hard drive for a boot, and many other things. Without a bios, the processor would not know what to do.
BIOS Is the program to boot the computer and load the OS Into the computer's RAM.
this can b a problem of ram
The first place would be the ROM BIOS. Then the BIOS checks your storage devices and tries to load the boot area from the first available one it finds, and the boot sector then starts the operating system.
BIOS is software. It tells system software how to communicate with installed hardware. ROM is hardware. It stores a copy of the BIOS, and automatically loads its contents into RAM (the BIOS) when power is first applied to the system. Thus, while the two are related, they are not the same.
Based on experience, I think it will do one of the following two things: - Not boot up while the out of specification RAM was installed. - Boot up, but only recognize the maximum ram the mother board specifies
The most thorough way of testing your RAM would be using a boot-up memory test (unless your computer has a built-in RAM test in its BIOS, which can be accessed by pushing F1 or F2 when the computer first turns on). Here's a link to an iso image you can burn to a CD. After burning it, you would boot the computer from the CD. If it doesn't boot from the CD, you might need to change your boot order from the bios. Set the CD drive as the primary boot location and if it still isn't booting from the CD, you may not have burned it correctly. http://www.memtest86.com/download.HTML
Use Memtest86+, you have to boot it from bios. It's used by many Overclockers to check ram stablitity and consistency, while changing timings and volts.
PRAM (permanent RAM )
BIOS and drivers use RAM (random access memory) however, in different forms. The BIOS is essentially a small chip of RAM that houses the code for running the operating system and the hardware. This hardware is controlled by the device drivers which run on the operating system which uses separate RAM which has a far greater capacity than the BIOS. this RAM is also shared by the operating system and is usually found in sticks that plug into the motherboard. the BIOS can operate without RAM but not the other way around