compatibility mode

Under system performance tab, I see that something called compatibility mode is being used. The message informs me that this mode is because there is a device driver in the config.sys or autoexec.bat that is bad, but Windows was caring enough to make things work anyway.
Both config.sys and autoexec.bat are empty, I'm using defaults. How do troubleshoot this.
It is noteworthy that I deleted a file by accident called system.1st from root. Any relationship?
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waynebConnect With a Mentor Commented:
You should not have deleted system.1st as this is the first good registry that was created and should be kept encase your registry ever becomes corrupted.  The problem is not related to your compatibility mode issue.  How ever start the system in safe mode by rebooting the system and pressing f8 as soon you see starting windows 95 choose safe mode. Once in windows goto control panel and then click on the system icon click on and remove you ide controllers from device manager.  Reboot the system and allow windows 95 plug and pray to redetect you ide controllers.  99% of the time this will correct your problem, and no further action will be required.  If does not work then post more info on the chipset that your motherboard uses and more details on your system configuration.
gizmoramaAuthor Commented:
I did try reinstalling the IDE controller as you say, but not from safe mode. I will give it a try and post a follow up.
regarding system.1st, can I get it back somehow? (read recreate)

gizmoramaAuthor Commented:
Tom's answer fixed the problem FDISK /MBR did the trick!
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