Hi i am installing new kernel 3.12.x on redhat 6 machine. Below is my steps i followed to install new kernel.

1.extract kernel in /usr/src/ directory
2.Switch to cd /usr/src/linux-3.12.x
4.make menuconfig
5.saved defaults to config file
3.make
4.make modules_install
5.make install

in this process i am getting below error.

ERROR: modinfo: could not find module fuse
ERROR: modinfo: could not find module autofs4
ERROR: modinfo: could not find module target_core_iblock
ERROR: modinfo: could not find module target_core_file
ERROR: modinfo: could not find module target_core_pscsi
ERROR: modinfo: could not find module target_core_mod
ERROR: modinfo: could not find module configfs
ERROR: modinfo: could not find module 8021q
ERROR: modinfo: could not find module bnx2fc
ERROR: modinfo: could not find module fcoe
ERROR: modinfo: could not find module libfcoe
ERROR: modinfo: could not find module libfc
ERROR: modinfo: could not find module scsi_transport_fc
ERROR: modinfo: could not find module scsi_tgt
ERROR: modinfo: could not find module garp
ERROR: modinfo: could not find module stp
ERROR: modinfo: could not find module llc
ERROR: modinfo: could not find module sunrpc
ERROR: modinfo: could not find module be2iscsi
ERROR: modinfo: could not find module iscsi_boot_sysfs
ERROR: modinfo: could not find module bnx2i
ERROR: modinfo: could not find module cnic
ERROR: modinfo: could not find module uio
ERROR: modinfo: could not find module ib_iser
ERROR: modinfo: could not find module rdma_cm
ERROR: modinfo: could not find module ib_cm
ERROR: modinfo: could not find module iw_cm
ERROR: modinfo: could not find module ib_sa
ERROR: modinfo: could not find module ib_mad
ERROR: modinfo: could not find module ib_core
ERROR: modinfo: could not find module ib_addr
ERROR: modinfo: could not find module iscsi_tcp
ERROR: modinfo: could not find module libiscsi_tcp
ERROR: modinfo: could not find module libiscsi
ERROR: modinfo: could not find module scsi_transport_iscsi
ERROR: modinfo: could not find module cachefiles
ERROR: modinfo: could not find module fscache
ERROR: modinfo: could not find module ipv6
ERROR: modinfo: could not find module dm_mirror
ERROR: modinfo: could not find module dm_region_hash
ERROR: modinfo: could not find module dm_log
ERROR: modinfo: could not find module uinput
ERROR: modinfo: could not find module iTCO_wdt
ERROR: modinfo: could not find module iTCO_vendor_support
ERROR: modinfo: could not find module sg
ERROR: modinfo: could not find module coretemp
ERROR: modinfo: could not find module kvm_intel
ERROR: modinfo: could not find module kvm
ERROR: modinfo: could not find module microcode
ERROR: modinfo: could not find module serio_raw
ERROR: modinfo: could not find module pcspkr
ERROR: modinfo: could not find module i2c_i801
ERROR: modinfo: could not find module i2c_core
ERROR: modinfo: could not find module lpc_ich
ERROR: modinfo: could not find module mfd_core
ERROR: modinfo: could not find module shpchp
ERROR: modinfo: could not find module dm_mod
ERROR: modinfo: could not find module e1000e
ERROR: modinfo: could not find module i5400_edac
ERROR: modinfo: could not find module edac_core
ERROR: modinfo: could not find module i5k_amb
ERROR: modinfo: could not find module ioatdma
ERROR: modinfo: could not find module dca
ERROR: modinfo: could not find module floppy
ERROR: modinfo: could not find module ext4
ERROR: modinfo: could not find module mbcache
ERROR: modinfo: could not find module jbd2
ERROR: modinfo: could not find module sd_mod
ERROR: modinfo: could not find module crc_t10dif
ERROR: modinfo: could not find module pata_acpi
ERROR: modinfo: could not find module ata_generic
ERROR: modinfo: could not find module ata_piix

Can you please help me to resolve this.

There is no need to run make install.

Instead you can copy the generated bzImage from arch/(i386/x86_64)/boot/bzImage to /boot. It's the linux kernel produced. Also copy .config and System.map file to boot. And use grub to load them. Modules get installed with make modules_install.