My neighbor brought me this pos to try to fix. When trying to play any sound file it says no sound device installed.

The sound is motherboard resident.

I have tried reinstalling the driver from the emachine site. They didn't have one for this exact model so I picked the next one up.

some infomation.

intel 845G chipset family
82845G/GE/GL/GV
82801DB(ICH4)
intel 82845G Graphics controller

CPU: Intel® Pentium® 4 Processor 2.53GHz (512KB L2 cache & 533MHz FSB)
Operating System: Genuine Microsoft® Windows® XP Home Edition

Chipset: Intel® 845G chipset
Memory: 512MB DDR (PC2100)
Hard Drive: 100GB HDD
Optical Drive: 48x Max. CD-RW Drive; 16x Max. DVD Drive; 3.5" 1.44MB FDD
Video: Intel® Extreme Graphics 3D (1 AGP slot available)
Sound: AC '97 Audio
Network: 10/100Mbps built-in Ethernet
Modem: 56K ITU v.92-ready Fax/Modem
Peripherals: Office Multimedia Keyboard, 2-Button Wheel Mouse, Amplified Stereo Speakers
Ports/Other: 6 USB ports (2 on front), 1 Serial, 1 Parallel, 2 PS/2, Audio In & Out, Mic-In & Head Phone jack on front

This should work

Download Software, Drivers and Utilities Filters

Downloaded and installed...still nothing happening. Something I am missing?

no sound device installed under control panel.

Try this one:

realtek alc202 a intel 82801db ich4 ac 97 audio control driver (Realtek)