We help IT Professionals succeed at work.
Get Started

Dell PC rebooting randomly - unsure of cause

Last Modified: 2013-11-09
We have a Dell Optiplex 745 that reboots randomly when we use it.  It is running Windows XP and I have reinstalled Windows XP on this machine manually numerous times to see if that was the problem.  There is no BSOD or any kind of message.  The screen will freeze, go blank, then reboot to the BIOS screen and continue loading Windows.  This problem has been going on for several months now and it is very random and intermittent so it is very hard to reproduce. Dell has already replaced the motherboard and power supply, but the problem continues.  Dell recommended we unplug the network cable and let it sit for a week, which we did.  During that time it never rebooted so now Dell thinks it is not a hardware issue but a problem with our network/domain.  However, we are very sure it is not our network or domain or else the other PCs on our network would be experiencing the same problem, especially those PCs that are of the same model and hardware configuration.  The PC passes all of Dell's diagnostic tests and I want to think the problem may be the CPU, RAM, NIC or HD.

Has anyone else ever encountered this?  Any suggestions? Please advise.
Watch Question
This problem has been solved!
Unlock 2 Answers and 31 Comments.
See Answers
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE