BSOD on Windows XP is driving me nuts

ok so we have an older dell running windows xp that isn't working properly and i'm not sure why. It never did this until about a month ago and i can't find anything online that helps. We're using it as a keyboard system using IK multimedia total workstation and that stuff works just fine its just starting to piss me off because every time i try to defrag the computer i get BSOD which gives me this code:

0x00008086

or this code:

0x000007e

its always one of those two but we haven't changed anything on this computer to make it start doing this.

Can you please help me figure out what is going on and fix it?
 
How to find and post your Minidump Files:

My Computer > C Drive > Windows Folder > Minidump Folder > Minidump Files.

It is these files that we need (not the folder). Attach to your next post the five most recent dumps. Notice the Manage Attachments button at the bottom when you go to post the next time. You can Zip up to five files per Zip; if you only have one or two you don’t need to zip them, just attach as is. Please do us a favor and don’t Zip each one individually.
 
Enabling Minidump Files


For XP:

1. Right click My Computer > click Properties > click Advance tab

2. The Advance Screen at the bottom right has Error Reporting. Click this on.

3. Click Enabled error reporting and also check both boxes underneath: Windows operating system and Programs.

4. Now click Choose Programs and click All Programs. Then click Okay and that screen will close. At the next screen click Okay and that will close.

5. You are back to the Advance screen. Find the Start up and Recovery which has underneath it System startup, system failure, and debugging information. Click the Settings box.

6. Another screen will open. You want the System failure section. Enable all three boxes.

7. Under these boxes is Write debugging information. Choose the option Small memory dump (64kb). Click OK and that screen will close.

8. Click OK one more time and you'll be finished. Now the ability for your system to write minidumps should be enabled.
 
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