PCI/internal sound card not detected

my sound system is not working

I did the basic troubleshooting list at https://help.ubuntu.com/community/SoundTroubleshooting
and my sound system is not working

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-167.217-generic 3.13.11-ckt39
Uname: Linux 3.13.0-167-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.29
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: Unity
Date: Fri Mar 29 13:40:15 2019
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-20140620-0
InstallationDate: Installed on 2016-08-22 (948 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Title: PCI/internal sound card not detected
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/02/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 4.0.9
dmi.board.name: 01M0MH
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvr4.0.9:bd06/02/2016:svnDellInc.:pnInspiron15-3552:pvr4.0.9:rvnDellInc.:rn01M0MH:rvrA01:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 15-3552
dmi.product.version: 4.0.9
dmi.sys.vendor: Dell Inc.