Windows crashes in an endless loop

Compaq Hp compaq 15.6" presario cq56-115...
June 13, 2012 at 10:07:27
Specs: Windows XP, Intel Core 2 Duo
how do I get into my computer when I am having an endless reboot cycle due to an sptd.sys file? I have read about this issue in earlier strings in this forum, but haven't found the solution. My OS is downgrated from VISTA to XP.

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#1
June 13, 2012 at 12:21:38
Start Windows in 'Safe Mode'.
Completely & thoroughly uninstall Daemon Tools or Alcohol (whichever one is installed).
Restart Windows.

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#2
June 13, 2012 at 19:19:54
If you're not familiar with (XP's) Safe mode (without networking), when it works properly, you see a screen filled with lines that show which programs are loading, then it stays that way for the last screen full for as long as a minute or more, then the Logon screen appears with at least the built in Administrator user and your user listed, you pick a user, then the desktop screen loads, a large window pops up and you are asked if you want to run the computer in Safe mode or choose something else.

In this case choose to use Safe mode.

"Start Windows in 'Safe Mode'"

Remove any bootable CDs or DVDs in drives.

Press F8 repeatedly while booting the computer, don't hold down the key, until you see the "Advanced..." menu.

For the purposes of fixing this problem, choose Safe mode, NOT Safe mode with networking.

(Some bioses have their own use for pressing F8 while booting. e.g. you may see a screen where you choose a device to boot the computer from. If you see something like that, READ the screen to find what key you press to exit that screen, e.g. Esc.
Press that key, then immediately repeatedly press F8 until the "Advanced..." menu appears. )

I looked on the web - you'll probably have the same rebooting problem in Safe mode unless you " Press ESC to cancel loading SPTD.sys".

I also found info that said un-installing Daemon Tools or Alcohol does not remove SPTD.SYS.

See the following......

http://www.duplexsecure.com/en/faq

Q: How can I disable SPTD on my computer to check if it causes problems?

A: If your system has some problems with SPTD installation you can do as follows:

If your system is already running then go to step 2 directly. Otherwise start from step 1.

Step 1. Boot in safe mode and press ESC key when you see on bottom line of display: "Press ESC to cancel loading SPTD.sys". This will abort loading of SPTD layer.


Step 2

(Start - Run - type: regedit , press Enter )

Find "HKEY_LOCAL_MACHINE\System\CurrentControlSet\ Services\sptd" registry key in REGEDIT and set DWORD Start value to 4 (i.e. disabled).

Step 3. Reboot again in normal mode and check if your issue is solved.

To reenable SPTD restore the DWORD Start value back to '0' and reboot your computer.
.....

(If booting normally then works, you could un-install Daemon Tools or Alcohol in Add or Remove Programs, but SPTD.SYS may still be there after that has been un-installed, after the computer has been restarted.

Try the following - if it's still there you can un-install it.
If it isn't there, just exit the Setup. )

(All versions of XP except Pro 64 bit are 32 bit.)

Q: How can I remove SPTD driver on 32-bit OS?

A: To remove SPTD, simply download SPTD setup file "SPTDinst-v181-x86.exe" for Windows 2000/XP/2003/Vista (32-bit) [675,896 bytes] and execute it.

In dialog that appears press "Uninstall" button and then SPTD will remove itself from your Windows installation.

If you want to install it again then execute the same setup file and press "Install".
.....

Q: How can I remove SPTD driver on 64-bit OS?

A: To remove SPTD, simply download SPTD setup file "SPTDinst-v181-x64.exe" for Windows XP/2003/Vista (64-bit) [801,336 bytes] and execute it.

In dialog that appears press "Uninstall" button and then SPTD will remove itself from your Windows installation.

If you want to install it again then execute same setup and press "Install".
.....

Download the SPTD setup file
http://www.duplexsecure.com/en/down...


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