computer intermittently freezing

message to ask for help for adult computer #4

hello, i work at my local library, i am 16, very tech savvy, and i dont work that much. for context we live in a small town where professional tech support does not come often, cheap, or efficient. and we are very under budget. so i am pretty much the go to guy for computer support, besides one other staff member, however he has other duties, and i really don't have any tasks other than being at our front desk. also i only work every Friday/Saturday, so there is a large chunk of time i cant work.

before i get to my problem i will describe the log on program we use for patrons to access the computers, and then the security program. our log on system is called Cassie (http://www.librarica.com/) and has a screen users can use to log in to access the computer for an hour a day. and then we use fortres 101(http://www.fortresgrand.com/products/f101/f101.htm) to prevent patrons from changing the computer and desktop, then avg free is our virus scanner

so now onto the problem. quite a long time ago i noticed that one of our patron computers (we have 20.) was down, when i went over to check i noticed the desktop had been changed from what it should be (black screen with non movable icons of programs patrons can run) to a default desktop with no icons on it. so i spent about 45 min recreating the desktop, and then i thought our troubles were over. but ever since then it hardly ever works. it either does one of 2 things, either freezes the screen (i am fairly certain it only does this if it is on the Cassie log in screen, ) or has the blue screen of death. it freezes very often, i cant think of a time i have come in to see it working (i restarted it not even an hour ago and it is frozen). when it runs it runs fine. i cant think of any changes that happened when it broke. it was working one week and the next it was not. i ran a virus scanner a couple weeks ago and it did not turn up an abnormal amount of errors compared to the others. it did not help to delete the files. i have a hijack this log from the broken computer, and from a computer that works as intended. thank you very much to all who will help me, as i really need it. if you have questions i will try to reply to this thread or you can email me at <snip>.thank you very much.

on to the hijack this log of the broken computer.

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 8:54:49 AM, on 6/18/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0013)
Boot mode: Normal
Running processes:


again thank you very much if you can help.

 

I would suggest looking at the Mainboard to see if there are any capacitors that are domed on top or show evidence of leaking.

http://www.shnerdlys.com/caps_close-up.jpg

 

If you are getting the Blue screen, try removing one of the memory modules and then try them 1 at a time to see if problem persist. 1 of the stick might be bad.