Solved

PC REBOOTS FOR NO APPARENT REASON.

Posted on 2004-04-01
8
247 Views
Last Modified: 2010-04-25
Working on an IBM Netvista, C900 on an Intel 810e mobo, 64mb ram, 30gb hdd, cd & floppy with build in nic.

The power supply went bad, replaced it and and then it would freeze up booting into windows (ME). Testing the harddrive found it to be bad. Replaced it, formatted and reinstalled Win2K Pro. Everything went fine. Booted up to the desktop. When I went to go into control panel to see what devices weren't set up properly, the computer reboots. Did this almost every time, sometimes it would just freeze completely. It would do this every time within 1-3 minutes. Sometimes without even touching the computer it would reboot. Tested the new harddrive, but it tests good. I tried three different sticks of memory with the same results.

I then reformatted the harddrive with Win98SE and it works fine for quite awhile, but still occasionly freezing up, and just once so far (after about 3 hours) has it rebooted itself.

I'm thinking that the motherboard might be a problem or even the CPU. Is there a good way to test these. I used IBM's pc doctor, but that says everything is fine. Besides, that is a dos program.

Any suggestions? I really want to put Win2K back on because this is in a small office network environment.
0
Comment
Question by:casual1
8 Comments
 
LVL 5

Accepted Solution

by:
millsoft earned 43 total points
ID: 10736364
Hi casual1,

I've seen this sort of rebooting with bad MB, CPU, or even CPU fan. :)

If it's not the fan (running too slow or not at all), then as for how to tell which is the problem, for me it's usually more cost effective to replace the MB & CPU together (unless you happen to have a CPU or MB sitting around doing nothing) rather than spend time poking around in the dark.

Cheers!
Brad
0
 
LVL 69

Assisted Solution

by:Callandor
Callandor earned 41 total points
ID: 10736427
There's no easy way to test a motherboard, because it has too many components, and most of them now are part of a large circuit.  The usual way to figure out that a motherboard is the culprit is to eliminate all other possibilities.  You have replaced the power supply, hard drive, and tried different memory, so those are now low probability causes.  Win98SE is not a real good test of stability because it doesn't use memory the way Win2KPro does.  Testing the cpu is done by trying it in another system and seeing if it works.

I would go over all the connections and make sure they are snug: power connectors, RAM, cpu socket placement, and cpu fan.  I would also swap the video card, just to be sure, because a faulty video card can keep a system from booting.  Then if the cpu checks out in another system, I would conclude that the motherboard is bad.
0
 
LVL 4

Assisted Solution

by:hawgpig
hawgpig earned 41 total points
ID: 10737799
Get a temperature monitoring software.....
Like Speed fan (freeware)
http://www.almico.com/speedfan.php
install it on the computer and see what the temperature is reading...
with an intel you should not be getting over 120 degrees F (you can change the temp reading in speedfan under configuration)
I'll bet the CPU is over heating and causing the lock ups...
If I remember right the Intel 810 has temp sensors
Good Luck
0
 
LVL 13

Expert Comment

by:compfixer101
ID: 10741473
check out the bios configs for the cpu temp it might get too hot in there that the computer restart due to the heat check in there for the temp


change the cpu



open the case and keep it open
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
2 monitor Displays on 1 PC 7 107
Why does my NIC only work with a switch? 10 45
Dell OptiPlex GX620 Not Powering On 16 85
desktop pc occasionally wont boot up 10 73
Article by: SHIELD1
The 5 R's 1. Repair 2. Restore 3. Reinstall 4. Remote admin 5. Run away OK so I'm not the most skilled engineer around but I definitely have an abundance of experience: electronic repairs since I was 13 and PC and computer hardware repair…
I use more than 1 computer in my office for various reasons. Multiple keyboards and mice take up more than just extra space, they make working a little more complicated. Using one mouse and keyboard for all of my computers makes life easier. This co…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now