try to install from original cd's
your install problems sounded strange to me until I read:
>I am installing of CD which an experienced user burned for me.
Well, I would call myself an experienced user but I would never be able to burn a linux distribtion myself.
Try to find out if you've got an original mandrake cd, if not try to get one.
If you have the original CD, try to do a memory test (Disable quick power on self test in BIOS), to see if your memory ist alright. When a Linux system crashes frequently when doing differnt things, it's often the hardware.
Hope it helps,