Any instrumental metal music with heavy riff and steady drum beat would be fine, and please tell the bands' name. Thanks.

Try System of a Down or Tool and Metallica

Technically these are Industrial, which a lot of people consider metal but personally I don't think the purest Industrial is Metal in any sense, but I digress... Also, maybe not instrumental in the strictest sense, but any "lyrics" are background loop samples at most.

"Sex Bomb" by Lords of Acid
"Jesus Built My Hotrod" by Ministry
"So What" by Ministry

Try Some Joe Satriani ,Summer Song,maybe you'll like it