SP2 Install Failed and SP2 Uninstall Also Fails - Help!

Here is what has happened.

1. Downloaded & ran WindowsXP-KB835935-SP2-ENU.exe on 2 systems - everything
OK.
2. Ran same (WindowsXP-KB835935-SP2-ENU.exe) on IBM Thinkpad T41 running PRO.
3. Install hung @ 50% complete (for over 12 hours).
4. Rebooted. BSOD on reboot - c0000135
5. Rebooted into recovery console & removed SP 2 with steps from KB 875355.
6. Tried SP2 install again - hung as per step 3 above.
7. Rebooted, BSOD on reboot c0000135.
8. Rebooted into recovery console & tried to remove SP 2 with steps from KB
875355. Uninistal HUNG.
9. Killed uninstall. Uninstalled Hotfix 824141.
10. Retried SP2 installation. Hung.
11. Retried SP2 uninstallation. Hung.

Final state:
- SP2 installation won't complete.
- SP2 uninstallation won't complete.
- Control Panel shows SP2 *is* installed.
- Winver shows Version 5.1 (Build 2600.xpsp_sp2_rtm.040803-2158 : Service
Pack 2)
- Firewall & wireless updates *are* present.
- SP2 Installation ever successfully completed.
- Security checks required for my RAS dialup indicate that SP2 is not present.

How can I either completely remove SP2 or get a full reinstallation?

Thanks.

Where ever the .exe extracted itself too....go to the
dark place (command window) go the the update folder
within and type update.exe /uninstall
>-----Original Message-----
>Here is what has happened.
>
>1. Downloaded & ran WindowsXP-KB835935-SP2-ENU.exe on 2
systems - everything
>OK.
>2. Ran same (WindowsXP-KB835935-SP2-ENU.exe) on IBM
Thinkpad T41 running PRO.
>3. Install hung @ 50% complete (for over 12 hours).
>4. Rebooted. BSOD on reboot - c0000135
>5. Rebooted into recovery console & removed SP 2 with
steps from KB 875355.
>6. Tried SP2 install again - hung as per step 3 above.
>7. Rebooted, BSOD on reboot c0000135.
>8. Rebooted into recovery console & tried to remove SP
2 with steps from KB
>875355. Uninistal HUNG.
>9. Killed uninstall. Uninstalled Hotfix 824141.
>10. Retried SP2 installation. Hung.
>11. Retried SP2 uninstallation. Hung.
>
>Final state:
>- SP2 installation won't complete.
>- SP2 uninstallation won't complete.
>- Control Panel shows SP2 *is* installed.
>- Winver shows Version 5.1 (Build
2600.xpsp_sp2_rtm.040803-2158 : Service
>Pack 2)
>- Firewall & wireless updates *are* present.
>- SP2 Installation ever successfully completed.
>- Security checks required for my RAS dialup indicate
that SP2 is not present.
>
>How can I either completely remove SP2 or get a full
reinstallation?
>
>Thanks.
>
>.
>