Unable to view screen after trying to enable graphics card driver

Well, I found a older graphics card and had it installed. The system boots but all I get is a flashing screen, which is more than what I had before. Pretty much have given up. Bought the same model work station for $70 bucks. Installed Win 7 and it works. I'll take the hard drive out of the original one and connect it to a different system to get the files I want off it.
 

My Computer My Computer

At a glance

Windows 7 Pro SP1 64 bit8 GB
Computer type
Laptop
Computer Manufacturer/Model Number
Dell M6500 Precision Work Station
OS
Windows 7 Pro SP1 64 bit
Memory
8 GB
Screen Resolution
1920x
Internet Speed
30 Mbps
Antivirus
Norton Security
Browser
IE 11
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