Touch pad not working.

• OS Name Microsoft Windows 8 Pro
  Version 6.2.9200 Build 9200
  Other OS Description Not Available
  OS Manufacturer Microsoft Corporation
  System Name sunny
  System Manufacturer Dell Inc.
  System Model Inspiron 3542
  System Type x64-based PC
  System SKU 0651
  Processor Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz, 1700 Mhz, 2 Core(s), 4 Logical Processor(s)
  BIOS Version/Date Dell Inc. A03, 5/27/2014
  SMBIOS Version 2.8
  Embedded Controller Version 0.03
  BIOS Mode Legacy
  BaseBoard Manufacturer Dell Inc.
  BaseBoard Model Not Available
  BaseBoard Name Base Board
  Platform Role Mobile
  Secure Boot State Unsupported
  PCR7 Configuration Binding Not Possible
  Windows Directory C:\Windows
  System Directory C:\Windows\system32
  Boot Device \Device\HarddiskVolume1
  Locale United States
  Hardware Abstraction Layer Version = "6.2.9200.16384"
  User Name sunny\sunny BZU
  Time Zone Pakistan Standard Time
  Installed Physical Memory (RAM) 4.00 GB
  Total Physical Memory 3.91 GB
  Available Physical Memory 2.63 GB
  Total Virtual Memory 7.41 GB
  Available Virtual Memory 5.86 GB
  Page File Space 3.50 GB
  Page File C:\pagefile.sys
  Hyper-V - VM Monitor Mode Extensions Yes
  Hyper-V - Second Level Address Translation Extensions Yes
  Hyper-V - Virtualization Enabled in Firmware Yes
  Hyper-V - Data Execution Protection Yes
  
  
  
  I had Ubuntu 12.04 per installed on my laptop.
  Touch pad worked  fine on Ubuntu.The moment i put Window 8 installation disk on Cd drive and
  started to install window 8  ,the mouse pointer disappears and touch pad does not work.
  I installed window 8 using keyboard.
  Now, when i connect USB mouse,mouse pointer appears and started to work fine .when i disconnect USB 
  mouse,pointer disappears .when i press Ctrl without  USB mouse attached i see circles but no 
  physical mouse pointer.My touch pad is dead.There is no and off button on touch pad.But USB mouse is working fine. I use laptop only with the help of USB mouse.

  when i open Device manager there was no option  for touch pad .It has only  USB mouse option. 
  
  Things i have tried:
  
  
  
  1) ran “Hardware and Devices” troubleshooter to diagnose the exact issue.
  2)Installed  driver from dell support center.
  3)Installed synaptic driver for window 8.
  4)installed softwares  like "driver identifier" and "driver scanner" etc.
  4)Installed latest windows update.
  But no luck.
  
  Please help me to solve this problem.

  update:

  Touch pad working fine during window 7 installation.But touch pad disappears   during window 8 installation.

              The windows community refer me to dell forum.