Drwtsn32

I bootted my computer today and the annoying little ! thing came up saying that Drwtsn32 has been corrupted. It advised me to run checkdisk. After about a second of doing whatever it does, it stated that it cannot finish the scandisk for some reason. I was wondering how to fix it

That's the Dr. Watson Postmortem Debugger application. I'd wait for someone else to suggest what to do, but don't try and remove this as it's an essential process. My advice would be to format and install XP again but wait until someone can confirm that's the only option..

After about a second of doing whatever it does, it stated that it cannot finish the scandisk for some reason.

ScanDisk needs to be able to "lock" all files during its scan process.
If applications are open it cannot do so.
In fact, just having Windows running may cause ScanDisk to fail.

The message that you got probably referred to ScanDisk not being able to run due to files in use.
You probably also got an invitation to allow ScanDisk to Run the next time you reboot your machine.
That's what you should do if you want ScanDisk to complete its work.
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However: ………….

Doctor Watson isn't the problem all by itself.
It gets activated if there is some other problem with an application or within the OS.
—
So what applications were you Running at the time?
You state that you were just booting up.
Therefore, what applications might you have been using just before you last shut down?
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Doctor Watson can be activated by alot of things.
Virus
Spyware
OS file corruption
Hard Drive File Structure bad-clusters
poorly written application software
Junk and Temporary files still running after procedures are finished.
and more.
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So What to Do?

Dump your Temp and Temporary Internet Files
(do so manually or use one of the following: ATF-Cleaner - Ccleaner - CleanUp! 54.52 –your Choice)

Update and Run a scan with your on-board AntiVirus
Update and Run scans with your on-board AntiSpyware

You may benefit from running one of the online scans like Panda or Kaspersky.
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Next:
Run CHECKDISK <- - a more vigorous version of ScanDisk

Start - Run - (type)chkdsk /f /r - Enter<– notice the required spaces before the "/"s

Note: you will receive a warning that CHKDSK cannot be run due to files in use, and you will be invited to schedule CHKDSK to run the next time you reboot. Agree by typing "y". then reboot to allow chkdsk to run prior to Windows loading.

chkdsk /f /r should be run multiple times until it completes the entire set of its 5 scans without detecting any bad-clusters and without having to move any files.
Run it a second or even third time, until nothing is detected in any of the 5 included scans
____

Next:
Run Windows File Protection System File Checker

Start - Run - (type)sfc /scannow - Enter <– notice the required space between "c" and "/"
__________

Next:
Defrag your Hard Drive (at least C:\, but go ahead and defrag any others if you have the time)
___________

If you still have problems with DRWATSON popping up, we may need to uninstall/reinstall various application software or new drivers or hardware, if you can identify what you may have been doing just prior to the problem.

If DRWATSON continues to popup and you have no clue about prior activities, it may be useful to do a Repair Installation via Recovery Console. <–ask if you don't know how.

NOTE: It is important to have your valuable documents, data, and media, securely backed up to a remote storage (a CD/DVD or External HD) prior to attempting the above procedures.

Note: Bob's recommendation would probably have cleared things up, but may come at too high a cost in terms of time to format/fresh install OS/ install Drivers/ install software/ etc.

Best Regards