hey all please help

i've followed the instructions for a previous post from BC_programmer but the automatic reboot is still "looping" a friend told me. Please help I try and I try to fix this and it just keeps happening. I can enter safe mode for about 10 seconds and then it reboots...is this a virus or something that occurred when windows updated automatically, also can this problem be fixed?

my computer is a compaq presario notebook R3000 and I'm using windows xp.

in short i did the instructions for a XP repair install and it will not stay booted up still

PLEASE HELP ( I am not 100 % computer savvy so please easy explanations are appreciatedDid you happen to write down the contents of the entire "fatal" message? What are the contents of the entire message? Fatal Message
Stop: C000021a {fatal system error}
The windows LOGON process system terminated unexpectdely with a status of oxoooooo5 (oxoooooooo oxoooooooo)
the system has been shut down

does that help?I can find hardly any useful info. on this specific error

Are you able to boot into Safe Mode with Command Prompt?no unfortunately the computer goes quickly to the error message (less then 3 seconds) and reboots.

I did try the xp repair and that let me at least get to my desktop (with the originaly xp disc in) then it rebooted.

I can get into the prompt menu but it reboots after about 8 secondsA. If you have more than one RAM module INSTALLED, try starting computer with one RAM stick at a time.

NOTE Keep in mind, the manual check listed above is always superior to the software check, listed below. DO NOT proceed with memtest, if you can go with option A

B. If you have only one RAM stick installed...
...run memtest...

1. Download - Pre-Compiled Bootable ISO (.zip)
2. UNZIP downloaded memtest86+-2.11.iso.zip file.
3. Inside, you'll find memtest86+-2.11.iso file.
4. Download, and install ImgBurn: http://www.imgburn.com/
5. Insert blank CD into your CD drive.
6. OPEN ImgBurn, and click on Write image file to disc
7. Click on Browse for a file... icon:



8. Locate memtest86+-2.11.iso file, and click Open button.
9. Click on ImgBurn green arrow to start burning bootable memtest86 CD:



10. Once the CD is created, boot from it, and memtest will automatically start to run.

The running program will look something like this depending on the size and number of ram modules installed:




It's recommended to run 5-6 passes. Each pass contains very same 8 tests.

This will show the progress of the test. It can take a while. Be patient, or leave it running overnight.



The following image is the test results area:



The most important item here is the “errors” line. If you see ANY errors, even one, then you have bad RAM.

im not sure at all what you mean..... note the test pass may go to 120%I suspect, you may have RAM problem, so if you have more than 1 RAM stick installed, try starting LAPTOP with 1 RAM stick at a time.how do i do that?open the ram panel
and if you see 2 sitcks of ram
if they have a lock
unlock one and pull it out
otherwise just pull it out