Symbios Logic Inc. SCSI Miniport Driver
The driver can be started or stopped from Services in the Control Panel or by other programs. It is a Windows core system file. The program is not visible. It is a Microsoft signed file.
Try replacing it with a new copy through System File Checker. Rather than running the whole SFC routine, you can go to Start>Run, type in msconfig, click OK and on the General tab, click the "Expand File" button. Tell it you want to extract symc810.sys, tell it to extract it from either C:\I386 (if you have this directory on your hard disk) or your XP CD, and tell it to extract it to C:\Windows\System32\drivers.
Sorry, they're compressed files, so the file to expand should be symc810.sy_ . Try that.
Is your i386 folder on C: or are you using your XP CD? (You usually don't have a C:\i386 folder unless it's a "pre-installed" O/S. Some OEM installs create this folder.)
Here's a pic of the i386 folder on my XP CD, and the file;
EDIT: Once you get the "proper" file expanded and in the right location (C:\Windows\System32\drivers), you should delete the -symc810.sys file.